(689,'Are long-term N-body simulations reliable?',4,'Astrophysicists rely on solution for the $N$-body problem for a myriad of dynamics problems, from those in dark matter dynamics to those in planetary dynamics.  Over 50 years ago, Miller found that errors in our simulations of the N-body problem grow exponentially in time.  So why should one trust any such simulation over long times?  In this talk, I explore a three-body planetary system.  The allowed motion over long times can be estimated analytically using recent results from Hadden & Lithwich.  I find conventional integration methods yield statistics that are as accurate as higher order symplectic methods.  In one test, a symplectic corrector method gave unreliable statistics.    \r\n(Joint work with Sam Hadden and Junichiro Makino; Reference: arXiv:1910.08667)\r\n\r\n',100,'julio.pastor@uva.es','G.I.R. Análisis Numérico y Estocástico, Optimización Dinámica y Aplicaciones (ANEODA)','Seminario IMUVA. Edificio LUCIA','2020-01-10',NULL,'12:00:00','David M. Hernández','Harvard - Smithsonian Center for Astrophysics',1,'',NULL,NULL,'/uploads/carteles/2020/01/2020-01-10(David-M.-Hernandez)Seminario-689.pdf','',1,1),(690,'asdfasd',4,'$\\int_0^1 e^{-x}dx$',100,'julio.pastor@uva.es','','','0000-00-00',NULL,'00:00:00','asdfasdf','asdfasd',2,'',NULL,NULL,'/uploads/carteles/-0001/11/0000-00-00(asdfasdf)Seminario-690.pdf','',0,0),(691,'WIT: Un sistema simbólico programado en Python para cálculos de teoría de intersecciones y geometría enumerativa',10,'En este curso, presentado con transparencias que estarán a disposición de los asistentes, se entrelazan cuatro temas principales que aparecerán, en proporciones variables, en cada una de las sesiones: \r\n\r\n   1.  Repertorio de problemas de geometría enumerativa y el papel de la geometría algebraica en el enfoque de su resolución.\r\n   2. Anillos de intersección de variedades algebraicas proyectivas lisas. Clases de Chern y su interpretación geométrica. Descripción explícita de algunos anillos de intersección paradigmáticos.\r\n   3.  Enfoque computacional: Su interés y valor, principales sistemas existentes, WIT (filosofía, estructura, potencial). Muestra de ejemplos tratados con WIT.\r\n   4. Perspectiva histórica: Galería de héroes, hitos más significativos, textos y contextos, quo imus? \r\n\r\nHorario:  S. Xambó 17:00 - 18:15\r\n               N. Sayols 18:30 - 19:15 (sesión práctica)',9,'tasio@eio.uva.es','GIR SINGACOM','Seminario IMUVA, Edificio LUCIA','2020-01-13','2020-01-16','17:00:00','Sebastia Xambó y Narcís Sayols','Universidad Politécnica de Cataluña',1,'',NULL,NULL,'/uploads/carteles/2020/01/2020-01-13(Sebastia-Xambo-y-Narcis-Sayols)Curso-de-Doctorado-691.pdf','',1,1),(694,'Introducción a los códigos correctores de errores cuánticos',3,'Algunos problemas computacionales que eran intratables, ahora son tratables con un ordenador cuántico, como confirmó el algoritmo de Shor, para la factorización de enteros, con importantes consecuencias en criptografía. Por este motivo, hay un gran interés en el desarrollo de la computación cuántica. Las implementaciones de ordenadores cuánticos producen muchos más errores que las de los clásicos. Aunque la información cuántica no puede ser clonada, se pueden definir códigos cuánticos para solucionar este problema.\r\n\r\nPrimero, introduciremos brevemente los códigos correctores lineales clásicos. Luego, presentaremos algunos conceptos básicos del procesamiento de información cuántica de forma informal y veremos por qué no se pueden corregir errores cuánticos de forma análoga a los clásicos. Sin embargo, veremos que posible corregir errores cuánticos y presentaremos el código de Shor y la construcción CSS.\r\n\r\nLos prerrequisitos para esta charla son mínimos, únicamente álgebra lineal.',21,'santiago.encinas@uva.es','GIR SINGACOM','Sala de Grados I. Facultad de Ciencias','2020-02-13',NULL,'17:00:00','Diego Ruano Benito','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/02/2020-02-13(Diego-Ruano-Benito)El-IMUva-os-Habla-694.pdf','',1,1),(695,'Dark energy physics: the next generation',4,'Over the last twenty years, many efforts have been made to explain what has been called dark energy. Despite the large number of dark energy models, current observational data is not enough to discriminate among the many existing modes, since most of them provide the same good fits when compared to data. In this talk, I will review the current status of dark energy physics and possible new routes to break such degeneracy among theoretical models. ',83,'luismiguel.nieto.calzada@uva.es','Física Matemática (MathPhys)','Seminario B118','2020-02-12',NULL,'17:00:00','Diego Sáez-Chillón','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/02/2020-02-12(Diego-Saez-Chillon)Seminario-695.pdf','',1,1),(696,'Las matemáticas en los fluidos: olas y turbulencia',2,'En nuestro día a día estamos constantemente en contacto con fluidos en movimiento ya sea cuando nos lavamos los dientes o cuando damos un paseo por la playa. En esta charla vamos a tratar de explicar de manera intuitiva algunas de las matemáticas que hay detrás de la descripción del movimiento de los fluidos.',100,'julio.pastor@uva.es','','Sala de Grados II, Facultad de Ciencias','2020-02-27',NULL,'17:00:00','Rafael Granero Belinchón','Universidad de Cantabria',1,'','act2022020_GarciaBelinchon.png',NULL,'/uploads/carteles/2020/02/2020-02-27(Rafael-Granero-Belinchon)Ateneo-696.pdf','',1,1),(697,'The Geometrical Trinity of Gravity and the perils in affinesia',4,'The standard lore attributes gravity to the curvature of the spacetime as dictated by Einstein equations. I will discuss the conventional character of this association and present alternative geometrical frameworks where gravity can be alternatively ascribed to torsion and to non-metricity resulting in theories that reproduce the dynamics of General Relativity. Finally, I will discuss how going beyond the General Relativity equivalents leads to pathological theories.',83,'luismiguel.nieto.calzada@uva.es','Física Matemática (MathPhys)','Seminario B118','2020-02-25',NULL,'17:00:00','José Beltrán Jiménez','Universidad de Salamanca',1,'',NULL,NULL,'/uploads/carteles/2020/02/2020-02-25(Jose-Beltran-Jimenez)Seminario-697.pdf','',1,1),(698,'Spacetime torsion changes the polarization but not the speed of gravitational waves',4,'Gravitational waves, and multi-messenger astronomy, in particular, have opened up a new window into the Universe. For instance, the recently established experimental fact that electromagnetic and gravitational waves travel at the same speed in vacuum wiped out whole families of alternative gravitational theories. In this talk, we show in a model-independent way that the presence of spacetime torsion affects the polarization, but not the speed, of gravitational waves as compared with a torsionless spacetime.\r\n\r\nThese results are the consequence of a careful examination of the Weitzenböck-Lichnerowicz wave operator, the Weitzenböck identity, their generalizations for spaces with torsion, and the study of the eikonal limit on Riemann-Cartan geometries. The analysis is general enough to  include waves for other fields and to  discover when torsion affects their polarization.',83,'luismiguel.nieto.calzada@uva.es','Física Matemática','Seminario B118','0000-00-00',NULL,'17:00:00','Prof. Fernando Izaurieta','Universidad de Concepción, Chile',2,'',NULL,NULL,NULL,'',1,1),(699,'Spacetime torsion changes the polarization but not the speed of gravitational waves',4,'Gravitational waves, and multi-messenger astronomy, in particular, have opened up a new window into the Universe. For instance, the recently established experimental fact that electromagnetic and gravitational waves travel at the same speed in vacuum wiped out whole families of alternative gravitational theories. In this talk, we show in a model-independent way that the presence of spacetime torsion affects the polarization, but not the speed, of gravitational waves as compared with a torsionless spacetime.\r\n\r\nThese results are the consequence of a careful examination of the Weitzenböck-Lichnerowicz wave operator, the Weitzenböck identity, their generalizations for spaces with torsion, and the study of the eikonal limit on Riemann-Cartan geometries. The analysis is general enough to include waves for other fields and to discover when torsion affects their polarization.',9,'tasio@eio.uva.es','Física Matemática','Seminario B118','2020-03-12',NULL,'17:00:00','Fernando Izaurieta','Universidad de Concepción, Chile',1,'',NULL,NULL,'/uploads/carteles/2020/03/2020-03-12(Fernando-Izaurieta)Seminario-699.pdf','',1,1),(700,'Formación de vórtices en una teoría de Ginzburg-Landau dependiente del tiempo',4,'En una transición de fase de segundo orden, un sistema evoluciona entre dos estados con diferente simetría. En la fase por encima de la temperatura crítica, el valor del parámetro de orden en el mínimo del potencial efectivo de la teoría se encuentra en el cero. Sin embargo, una vez atravesada la temperatura crítica, la variedad de vacío (i.e., el mínimo del potencial) adquiere una topología no trivial (U(1) o Z6 para nuestro sistema) que posibilita la aparición de defectos topológicos mediante el mecanismo de ruptura espontánea de simetría. El estudio del patrón de vórtices emergente ha sido objeto de interés en cosmología y en materia condensada, pues su estudio permite obtener información de la teoría física subyacente que, de otro modo, sería inaccesible.\r\n\r\nEn esta charla, centraremos nuestra atención en una teoría de campos tridimensional de tipo Ginzburg-Landau dependiente del tiempo que atraviesa una transición de fase de segundo orden. La dinámica es sobre-amortiguada (se obvian los términos inerciales) y las fluctuaciones térmicas se modelan como ruido estocástico mediante un término de Langevin introducido de forma consistente. Hemos restringido nuestro estudio al caso límite de enfriamientos ultrarrápidos a través del punto crítico. En este régimen simplificado, hemos estudiado el proceso de formación de vórtices y hemos identificado diferentes mecanismos involucrados, cada uno con su tiempo característico.',83,'luismiguel.nieto.calzada@uva.es','Física Matemática','Seminario B118','2020-03-17',NULL,'17:00:00','Marcos Tello Fraile','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/03/2020-03-17(Marcos-Tello-Fraile)Seminario-700.pdf','',1,1),(702,'Taller infantil: Matemáticas de Papel. Papiroflexia y Ciencia.',7,'Taller infantil sobre Papiroflexia y Matemáticas dirigido a niños entre 6 y 12 años.\r\n\r\n\r\nSE APLAZA POR EL MOMENTO LA CELEBRACIÓN DE ESTA ACTIVIDAD\r\n',9,'tasio@eio.uva.es','','Biblioteca de Castilla y León, Plaza de la Trinidad, 2, Valladolid','2020-03-14',NULL,'12:30:00','Philippe Giménez','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(703,'Matemáticas de Papel. Papiroflexia y Ciencia.',5,'Conferencia para todos los públicos con motivo del día de pi\r\n\r\nSE APLAZA POR EL MOMENTO LA CELEBRACIÓN DE ESTA ACTIVIDAD',9,'tasio@eio.uva.es','','Museo de la Universidad de Valladolid, Edificio Rector Tejerina','2020-03-16',NULL,'19:00:00','Philippe Giménez','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(704,'Integral transform numerical methods for partial differential models with a finite degree of randomness',2,'In this talk we discuss how to construct manageable numerical solutions of random partial differential models with a finite degree of randomness allowing the computation of the expectation and variance of the approximating stochastic process solution. The construction of the numerical solution is performed by means of a combination of a random integral transform, the use of Montecarlo method and numerical integration quadrature. Numerical convergence throughout simulations is simulated with illustrative examples.',9,'tasio@eio.uva.es','','Aula Magna, Aulario Campus Miguel Delibes','2020-09-24',NULL,'17:00:00','Lucas Antonio Jódar','Universidad Politécnica de Valencia',1,'','act1032020_Jodar.png',NULL,'/uploads/carteles/2020/09/2020-09-24(Lucas-Antonio-Jodar)Ateneo-704.pdf','',1,1),(705,'Modelos compartimentales: un estudio comparativo de la evolución de la pandemia de COVID19 en China y Castilla y León.',1,'',9,'tasio@eio.uva.es','','','2020-04-01','2020-05-31','00:00:00','Pedro C. Álvarez, Eustasio del Barrio y Cristina Rueda','Universidad de Valladolid',2,'','act142020_CyLSIRVSIRM16.png',NULL,NULL,'',0,0),(706,'La función distancia mínima y la función huella de un ideal graduado',4,'<p>Sean $S$ un anillo de polinomios sobre el campo $K$ e $I$ un ideal graduado de $S$. En este seminario definiremos dos funciones asociadas a $I$: la función de distancia mínima $\\delta_I$ y la función huella $fp_{_I}$. Para definir $\\delta_I$ y $fp_{_I}$ usamos la función de Hilbert, el grado (multiplicidad) y una base de Gröbner para $I$. Estudiamos estas funciones desde un punto de vista computacional usando métodos de bases de Gröbner e implementaciones en Macaulay 2. También estudiamos estas funciones desde un punto de vista teórico y examinamos su comportamiento asintótico. Estas funciones pueden ser expresadas en términos de los invariantes algebraicos de $I$. Mostraremos que $fp_{_I}$ es una cota inferior para $\\delta_I$. Damos fórmulas para calcular $fp_{_I}$ y $\\delta_I$ en el caso de ciertas intersecciones completas. En el caso de ideales monomiales que son intersección completa $\\delta_I$ es igual a $fp_{_I}$ y exhibimos una fórmula explícita en términos de los grados de un conjunto minimal de generadores de $I$.\r\n</p><p>El seminario tendrá lugar en Webex:<br>Número de reunión: 843 216 061<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=mb2f8aa3a49f0d3a689b392b129b196d3\">https://profevirtual.webex.com/profevirtual/j.php?MTID=mb2f8aa3a49f0d3a689b392b129b196d3</a></p><p>Para participar y recibir la contraseña de la reunión se necesita registro: <a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 843 216 061)','2020-04-21',NULL,'16:00:00','Yuriko Pitones Amaro','CINVESTAV-Instituto Politécnico Nacional, México',1,'',NULL,NULL,'/uploads/carteles/2020/04/2020-04-21(Yuriko-Pitones-Amaro)Seminario-706.pdf','',1,1),(707,'Genetic algorithms with permutation-based representation for computing the distance of linear codes',4,'<p>Finding the minimum distance of linear codes is an NP-hard problem. Traditionally, this computation has been addressed by means of the design of algorithms that find, by a clever exhaustive search, a linear combination of some generating matrix rows that provides a codeword with minimum weight. Therefore, as the dimension of the code or the size of the underlying finite field increase, so it does exponentially the run time. In this work, we prove that, given a generating matrix, there exists a column permutation which leads to a reduced row echelon form containing a row whose weight is the code distance. This opens the possibility to use a permutation representation in metaheuristics to find the minimum distance of an arbitrary linear code, as an alternative to the classic discrete representation. The proposed model is polynomial time-dependent with respect to the dimension of the code and the size of the base finite field. It can be concluded from our experiments that usual limitations of discrete representation, such as high selective pressure, are palliated by means of the new representation. Our approach is able to find true minimum distances of general linear codes of medium size, and it is the first work, as far as we know, to address the problem for codes over finite fields with more than two elements using metaheuristics. Comparison with the existing methods in the literature suggests that our proposal is accurate, efficient and able to outperform previous approaches for BCH and EQR binary codes. As a by-product, we have been able to find some inaccuracies in the list of best known linear codes over the field with eight elements in the Magma Computational Algebra System.</p><p>El seminario tendrá lugar en Webex:<br>Número de reunión: 844 055 777<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=mac61386ee7519812d81a30626cd62115\">https://profevirtual.webex.com/profevirtual/j.php?MTID=mac61386ee7519812d81a30626cd62115</a></p><p>Para participar y recibir la contraseña de la reunión se necesita registro: <a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 844 055 777)','2020-05-05',NULL,'16:00:00','F. Javier Lobillo','Universidad de Granada',1,'',NULL,NULL,'/uploads/carteles/2020/05/2020-05-05(F.-Javier-Lobillo)Seminario-707.pdf','',1,1),(708,'Weight distribution of cyclic codes defined by quadratic forms and related curves',4,'<p>We consider cyclic codes $C_\\mathcal{L}$ associated to quadratic trace forms in $m$ variables $Q_R(x) = \\mbox{tr}_{q^m/q}(xR(x))$ determined by a family $\\mathcal{L}$ of $q$-linearized polynomials $R$ over $\\mathbb{F}_{q^m}$, and three related codes $C_{\\mathcal{L},0}$, $C_{\\mathcal{L},1}$ and $C_{\\mathcal{L},2}$. We describe the spectra for all these codes when $\\mathcal{L}$ is an even rank family, in terms of the distribution of ranks of the forms $Q_R$ in the family $\\mathcal{L}$, and we also compute the complete weight enumerator for $C_\\mathcal{L}$. In particular, considering the family $\\mathcal{L} = \\langle x^{q^\\ell} \\rangle$, with $\\ell$ fixed in $\\mathbb{N}$, we give the weight distribution of four parametrized families of cyclic codes $C_\\ell$, $C_{\\ell,0}$, $C_{\\ell,1}$ and $C_{\\ell,2}$ over $\\mathbb{F}_q$ with zeros $\\{ \\alpha^{-(q^\\ell+1)} \\}$, $\\{ 1,\\, \\alpha^{-(q^\\ell+1)} \\}$, $\\{ \\alpha^{-1},\\,\\alpha^{-(q^\\ell+1)} \\}$ and $\\{ 1,\\,\\alpha^{-1},\\,\\alpha^{-(q^\\ell+1)}\\}$ respectively, where $q= p^s$ with $p$ prime, $\\alpha$ is a generator of $\\mathbb{F}_{q^m}^*$ and $m/(m,\\ell)$ is even. Finally, we give simple necessary and sufficient conditions for Artin-Schreier curves $y^p-y = xR(x) + \\beta x$, $p$ prime, associated to polynomials $R \\in \\mathcal{L}$ to be optimal. We then obtain several maximal and minimal such curves in the case $\\mathcal{L} = \\langle x^{p^\\ell}\\rangle$ and $\\mathcal{L} = \\langle x^{p^\\ell}, x^{p^{3\\ell}} \\rangle$..</p><p>El seminario tendrá lugar en Webex:<br>Número de reunión: 841 907 577<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=m0f3338222bf960938339ffa63cb27c8f\">https://profevirtual.webex.com/profevirtual/j.php?MTID=m0f3338222bf960938339ffa63cb27c8f</a></p><p>Para participar y recibir la contraseña de la reunión se necesita registro: <a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 841 907 577)','2020-05-19',NULL,'16:00:00','Ricardo A. Podestá','Universidad Nacional de Córdoba (Argentina)',1,'',NULL,NULL,'/uploads/carteles/2020/05/2020-05-19(Ricardo-A.-Podesta)Seminario-708.pdf','',1,1),(709,'Weierstrass semigroup at m+1 rational points in maximal curves which cannot be covered by the Hermitian curve',4,'<p>Let $\\mathcal{X}$ be a non-singular, projective, irreducible, algebraic curve of genus $g \\geq 1$ over a finite field $\\mathbb{F}_{q}$. Fix $m$ distinct rational points $P_1,\\ldots,P_m$ on $\\mathcal{X}$. The set $H(P_{1}, \\ldots , P_{m}) = \\{(a_{1}, \\ldots, a_{m}) \\in \\mathbb{N}_{0}^ {m} \\mbox{ ; } \\exists f \\in \\mathbb{F}_q(\\mathcal{X}) \\mbox{ with } (f)_{\\infty} = \\sum_{i=1}^ {m} a_{i}P_{i} \\}$ is called the Weierstrass Semigroup in the points $P_1,\\ldots,P_m$. This semigroup is very important to calculate the parameters of algebraic geometry codes (AG codes) over $\\mathcal{X}$. In general, is very complicate determinate this semigroup and various efforts have been possible for certain types of curves. In 2018, joint with G. Tizziotti, we determinate the generator set $\\Gamma(P_1,\\ldots,P_m)$ of $H(P_1,\\ldots,P_m)$ for curves $\\mathcal{X}$ with affine plane model $f(y)=g(x)$, using the concept of discrepancy on two rational points $P,Q$ over $\\mathcal{X}$, introduced by Duursma and Park. With certain conditions, we will show how we can calculate the set $\\Gamma(P_1,\\ldots,P_m)$ for two types of maximal curves which cannot covered by the Hermitian curve. The first family the curves that we present is the example given by Giulietti and Korchmáros: For $q=n^3$, with $n \\geq 2$ a prime power, the $GK$ curve over $\\mathbb{F}_{q^2}$ is the curve in $\\mathbb{P}^{3}(\\overline{\\mathbb{F}}_{q^2})$ with equations $Z^{n^2-n+1} = Y \\sum_{i=0}^{n} (-1)^{i+1} X^{i(n-1)}$, $X^{n} + X = Y^{n+1}$. The second family was introduced in 2016, by  Tafazolian, Teherán and Torres:  For $a,b,s\\geq 1,n\\geq 3$ integers such that $n$ is odd. Let $q=p^a$ a power of a prime, $b$ is a divisor of $a$, $s$ is a divisor of $(q^n+1)/(q+1)$ and $c\\in \\mathbb{F}_{q^2}$ with $c^{q-1}=-1$. We define the curve $\\mathcal{X}_{a,b,n,s}$ over $\\mathbb{F}_{q^{2n}}$ with equations  $cy^{q+1}=t(x):=\\sum_{i=0}^{a/b-1}x^{p^{ib}}$ and $z^{M}=y^{q^2}-y$ where $M=(q^n+1)/(s(q+1))$.\r\n<p>El seminario tendrá lugar en Webex:<br>Número de reunión: 326 251 668<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=m785d0eb6c4c215a8edd0bcafedd50a1d\">https://profevirtual.webex.com/profevirtual/j.php?MTID=m785d0eb6c4c215a8edd0bcafedd50a1d</a></p><p>Para participar y recibir la contraseña de la reunión se necesita registro: <a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 326 251 668)','2020-06-02',NULL,'16:00:00','Alonso Sepúlveda Castellanos','Universidade Federal de Uberlândia, Brasil',1,'',NULL,NULL,'/uploads/carteles/2020/06/2020-06-02(Alonso-Sepulveda-Castellanos)Seminario-709.pdf','',1,1),(710,'A survey of Fernando Torres as mathematician and his mathematics',4,'<p>In this talk we  would like to say something about the works of Fernando Torres, and particularly about those works we did together. We would also like to share some reflections on him as a researcher colleague.</p><p><br></p><p>El seminario tendrá lugar en Webex:<br>Número de reunión: 137 500 6508<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=md963fefa3bde6132e6a185442be5f648\">https://profevirtual.webex.com/profevirtual/j.php?MTID=md963fefa3bde6132e6a185442be5f648</a></p><p><br>Para participar y recibir la contraseña de la reunión se necesita registro: <a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p><p><br></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 137 500 6508)','2020-06-17',NULL,'18:00:00','Cicero Carvalho & Guilherme Tizziotti','Universidade Federal de Uberlândia, Brasil',1,'',NULL,NULL,'/uploads/carteles/2020/06/2020-06-17(Cicero-Carvalho-&-Guilherme-Tizziotti)Seminario-710.pdf','',1,1),(711,'Applications of Cartesian codes',4,'<p>A simple way to define an evaluation code is as a linear code that depends on a set of functions and a set of points. The evaluation code is obtained when the functions are evaluated on the points. One of the most classical examples is a Reed-Solomon code. In this talk we will see how evaluation codes can be studied using basic tools of commutative algebra. Then we will focus on a family of evaluation codes known as Cartesian codes. We will study how they are defined and some of its applications to LCD codes, quantum codes, and locally recoverable codes.</p>\r\n\r\n<p>El seminario tendrá lugar en Webex:<br>Número de reunión: 137 200 6870<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=m778fd93d943105166eb86b62306d34f3\">https://profevirtual.webex.com/profevirtual/j.php?MTID=m778fd93d943105166eb86b62306d34f3</a></p><p><br>Para participar y recibir la contraseña de la reunión se necesita registro: <a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 137 200 6870)','2020-06-30',NULL,'16:00:00','Hiram H. López','Cleveland State University, EEUU',1,'',NULL,NULL,'/uploads/carteles/2020/06/2020-06-30(Hiram-H.-Lopez)Seminario-711.pdf','',1,1),(712,'Acto virtual de entrega de premios',7,'Entrega de premios de la última edición del concurso organizado por el IMUVa.',9,'tasio@eio.uva.es','','https://madisonmk.zoom.us/webinar/register/WN_DQeRFoZARCyTtLaSeZow2Q','2020-06-26',NULL,'11:00:00','Concurso IMUVa \"Las Matemáticas del Planeta Tierra\" ','edición 2020',1,'',NULL,'act2462020_CartelFaseFinal2020.pdf',NULL,'',1,1),(713,'The inyectivity of Borel map in Mandelbrojt Domains',9,'A Mandelbrojt region is a (not necessarily sectorial) connected open set $D$ in the Riemann surface of the logarithm with 0 in its boundary, symmetric with respect to a direction and with a positive opening (in a precise sense).\r\n\r\nIn 1952, S. Mandelbrojt gave a characterization of the injectivity of the asymptotic Borel mapping for the class of functions admitting uniform $\\mathbb{M}$-asymptotic expansion in these domains, where the control of the remainders is specified in terms of a given weight sequence $\\mathbb{M}$ of positive real numbers. We hope to extend this criterion to the Carleman-Roumieu ultraholomorphic class in $D$ consisting of the holomorphic functions with uniformly bounded derivatives in terms of the sequence $\\mathbb{M}$.\r\n\r\nhttps://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=mf29b301694e9808de0c715b6fd224d8f\r\n',9,'tasio@eio.uva.es','','Presentación virtual webex','2020-09-04',NULL,'09:30:00','Ignacio Miguel Cantero','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/09/2020-09-04(Ignacio-Miguel-Cantero)Seminario-de-Doctorado-713.pdf','',0,0),(714,'Intersection form and projective contractions',9,'Through this talk we will focus on the study of morphisms given by composition of a sequence of blow-ups of smooth $d$-dimensional projective varieties. The motivation is that this kind of morphisms play a central role on singularity theory due to the existence of embedded resolutions of singular projective varieties. More concretely, we are interested in finding an answer to the following question: Given the sky of such a morphism, is it possible to recover the sequence of blow-ups (modulo permissible permutations) from the numerical data given by the multilinear intersection form on divisors with exceptional support?\r\n\r\nOur main tool will be the existence of regular divisorial contractions under certain hypothesis. After defining an equivalence relation for the morphisms considered above, we will define the key concept of final divisor. Finally we will give some numerical criteria characterizing final divisors in the case of a sequence of point blow-ups with arbitrary ambient dimension $d$.\r\n\r\nhttps://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=meec00094b06eb4a3ca40d2e7df3f452b',9,'tasio@eio.uva.es','','Presentación virtual webex','2020-09-04',NULL,'10:10:00','Daniel Camazón Portela','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/09/2020-09-04(Daniel-Camazon-Portela)Seminario-de-Doctorado-714.pdf','',0,0),(715,'The Regularity of Center-Outward  Distribution and Quantile Functions',9,'We provide sufficient conditions under which the center-outward distribution and quantile functions introduced in Chernozhukov et al. (2017) and Hallin (2017) are homeomorphisms, thereby extending a recent result by Figalli. Our approach relies on Cafarelli\'s  classical regularity theory  for the solutions of the Monge-Ampère equation, but has to deal with  difficulties related with the unboundedness at the origin of the density of the spherical uniform  reference measure. Our conditions are satisfied by probabilities on Euclidean space with a general (bounded or unbounded) convex support which are not covered by Figalli. We provide some additional results about center-outward distribution and quantile functions, including the fact that quantile sets exhibit some weak form of convexity.\r\n\r\nhttps://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m411ecb622cb51229fb4966007118cdec',9,'tasio@eio.uva.es','','Presentación virtual webex','2020-09-04',NULL,'10:50:00','Alberto González Sanz','Universidad de Valladolid y Université Paul Sabatier de Toulouse',1,'',NULL,NULL,'/uploads/carteles/2020/09/2020-09-04(Alberto-Gonzalez-Sanz)Seminario-de-Doctorado-715.pdf','',0,0),(716,'Modelos Estadísticos Oscilatorios para resolver Problemas en Neurociencia',9,'La dinámica de neuronas tradicionalmente se ha modelado con complejos sistemas de ecuaciones diferenciales que resultan ineficaces en situaciones reales. Proponemos el uso de un novedoso modelo estadístico oscilatorio cuyos resultados son prometedores. Su formulación incluye la existencia de ruido mientras que sus parámetros, directamente relacionados con la señal, son capaces de caracterizar relevantes propiedades de los cambios de potencial entre neuronas.\r\n\r\nhttps://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m239561914adc77f9b23d5d54a638ffcf\r\n',9,'tasio@eio.uva.es','','Presentación virtual webex','2020-09-04',NULL,'12:05:00','Alejandro Rodríguez Collado','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/09/2020-09-04(Alejandro-Rodriguez-Collado)Seminario-de-Doctorado-716.pdf','',0,0),(717,'Fair Learning: an optimal transport based approach',9,'The aim of this thesis is two-fold. On the one hand, optimal transportation methods are studied for statistical inference purposes. On the other hand, the recent problem of fair learning is addressed through the prism of optimal transport theory. The generalization of applications based on machine learning models in the everyday life and the professional world has been accompanied by concerns about the ethical issues that may arise from the adoption of these technologies. In the first part of the thesis, we motivate the fairness problem by presenting some comprehensive results from the study of the statistical parity criterion through the analysis of the disparate impact index on the real and well-known Adult Income dataset. Importantly, we show that trying to make fair machine learning models may be a particularly challenging task, especially when the training observations contain bias. Then a review of Mathematics for fairness in machine learning is given in a general setting, with some novel contributions in the analysis of the price for fairness in regression and classification. In the latter, we finish this first part by recasting the links between fairness and predictability in terms of probability metrics. We analyze repair methods based on mapping conditional distributions to the Wasserstein barycenter. Finally, we propose a random repair which yields a tradeoff between minimal information loss and a certain amount of fairness. The second part is devoted to the asymptotic theory of the empirical transportation cost. We provide a Central Limit Theorem for the Monge-Kantorovich distance between two empirical distributions with different sizes $n$ and $m$,            $W_p(P_n, Q_m) , p \\geq 1,$ for observations on $\\mathbb{R}$. In the case $p>1$ our assumptions are sharp in terms of moments and smoothness. We prove results dealing with the choice of centering constants. We provide a consistent estimate of the asymptotic variance which enables to build two sample tests and confidence intervals to certify the similarity between two distributions. These are then used to assess a new criterion of data set fairness in classification. Additionally, we provide a moderate deviation principle for the empirical transportation cost in general dimension. Finally, Wasserstein barycenters and variance-like criterion using Wasserstein distance are used in many problems to analyze the homogeneity of collections of distributions and structural relationships between the observations. We propose the estimation of the quantiles of the empirical process of the Wasserstein’s variation using a bootstrap procedure. Then we use these results for statistical inference on a distribution registration model for general deformation functions. The tests are based on the variance of the distributions with respect to their Wasserstein’s barycenters for which we prove central limit\r\ntheorems, including bootstrap versions.\r\n\r\nhttps://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m84021b56cdf7580daf0571b0108b2ced',9,'tasio@eio.uva.es','','Presentación virtual webex','2020-09-04',NULL,'12:50:00','Paula Gordaliza','Universidad de Valladolid y Université Paul Sabatier de Toulouse',1,'',NULL,NULL,'/uploads/carteles/2020/09/2020-09-04(Paula-Gordaliza)Seminario-de-Doctorado-717.pdf','',0,0),(718,'Sobre la reducibilidad del espacio de arcos en característica positiva',5,'Presentaré algunos resultados obtenidos acerca de la reducibilidad del espacio de arcos $X_\\infty$ de una variedad algebraica irreducible $X$ definida sobre un cuerpo perfecto $k$ de característica $p>0$. Este estudio se apoya sobre técnicas de Frobenius y de Uniformización Local de valoraciones y arcos. El resultado principal proporciona la descomposición de  $X_\\infty$ en componentes irreducibles cuando $X$ es una superficie.\r\n\r\nTrabajo en colaboración con Angélica Benito y Ana Reguera.',31,'pgimenez@agt.uva.es','GIR Teoría de Anillos. Aplicaciones y Métodos Computacionales (TAAMC)','Seminario online: https://call.lifesizecloud.com/5265332. Código de Acceso: 2020. ','2020-09-11',NULL,'18:30:00','Olivier Piltant','CNRS y Univ. de Versalles (Francia)',1,'',NULL,NULL,'/uploads/carteles/2020/09/2020-09-11(Olivier-Piltant)Conferencia-718.pdf','',1,1),(719,'Net van der Waals force on a binary system of identical atoms',4,'It was recently shown that a net vdW force acts upon a binary system made of two distinctive atoms, one of which is initially excited –Phys.Rev.A, 062701 (2016).   Here we address this problem on a system made of two identical atoms, which resembles that of Dicke’s on super/sub-radiance. Following a fully Hamiltonian and time-dependent approach we show that, once the system is released with one of the atoms initially excited, a net force act upon the whole system. This force oscillates in time at the frequency that the excitation is transferred between the atoms by virtual photons, which carry the excess of linear momentum. The strength of the force becomes maximum for interatomic distances of the order of a wavelength\r\n',100,'julio.pastor@uva.es','G.I.R. Física Matemática','Seminario B118, Facultad de Ciencias','2020-10-22',NULL,'16:00:00','Julio Sánchez Cánovas','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/10/2020-10-22(Julio-Sanchez-Canovas)Seminario-719.pdf','',1,1),(720,'Multivariate cryptography and the complexity of solving random polynomial systems',4,'<p>The study of the complexity of solving a system of polynomial equations over a finite field is a central problem in symbolic computation, with a wide range of applications. In this talk, we focus on the applications to post-quantum cryptography, more specifically to multivariate cryptography. In multivariate cryptography, the security of the cryptosystem relies on the computational hardness of finding the solutions of a system of polynomial equations over a finite field. Therefore, estimating the complexity of solving a given system of polynomial equations produces an estimate for the security of the corresponding cryptosystem. Often, in their analysis, cryptographers make the assumption that the systems that they analyze are \"random\". In this talk, we discuss two distinct mathematical formulations for randomness of a system of equations. For each of them, we show estimates on the complexity of system solving by means of Groebner bases techniques. The new results that we present are joint work with M. Bigdeli, E. De Negri, M. Dizdarevic, R. Minko, and S. Tsakou.\r\n\r\n</p><p><br></p><p>El seminario tendrá lugar en Webex:<br>Número de reunión: 137 462 0171<br><a href=\"https://profevirtual.webex.com/profevirtual/j.php?MTID=m6d09a303029cac2b557d3c6c81435447\">https://profevirtual.webex.com/profevirtual/j.php?MTID=m6d09a303029cac2b557d3c6c81435447</a></p><p>Para  participar  y  recibir  la  contraseña  de  la  reunión  se  necesita  registro: <br><a href=\"https://forms.gle/sYzJW1uEdCtef4VX8\">https://forms.gle/sYzJW1uEdCtef4VX8</a></p>',110,'diego.ruano@uva.es','GIR SINGACOM','Webex (número de reunión 137 462 0171)','2020-10-06',NULL,'16:00:00','Elisa Gorla','University of Neuchâtel, Switzerland',1,'',NULL,NULL,'/uploads/carteles/2020/10/2020-10-06(Elisa-Gorla)Seminario-720.pdf','',1,1),(721,'Formación de vórtices en una teoría de Ginzburg-Landau dependiente del tiempo',4,'En una transición de fase de segundo orden, un sistema evoluciona entre dos estados con diferente simetría. En la fase por encima de la temperatura crítica, el valor del parámetro de orden en el mínimo del potencial efectivo de la teoría se encuentra en el cero. Sin embargo, una vez atravesada la temperatura crítica, la variedad de vacío (i.e., el mínimo del potencial) adquiere una topología no trivial (U(1) o Z6 para nuestro sistema) que posibilita la aparición de defectos topológicos mediante el mecanismo de ruptura espontánea de simetría. El estudio del patrón de vórtices emergente ha sido objeto de interés en cosmología y en materia condensada, pues su estudio permite obtener información de la teoría física subyacente que, de otro modo, sería inaccesible. \r\n\r\nEn esta charla, centraremos nuestra atención en una teoría de campos tridimensional de tipo Ginzburg-Landau dependiente del tiempo que atraviesa una transición de fase de segundo orden. La dinámica es sobre-amortiguada (se obvian los términos inerciales) y las fluctuaciones térmicas se modelan como ruido estocástico mediante un término de Langevin introducido de forma consistente. Hemos restringido nuestro estudio al caso límite de enfriamientos ultrarrápidos a través del punto crítico. En este régimen simplificado, hemos estudiado el proceso de formación de vórtices y hemos identificado diferentes mecanismos involucrados, cada uno con su tiempo característico.',100,'julio.pastor@uva.es','G.I.R. Física Matemática','Seminario B118, Facultad de Ciencias','2020-10-15',NULL,'16:00:00','Marcos Tello Fraile','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2020/10/2020-10-15(Marcos-Tello-Fraile)Seminario-721.pdf','',1,1),(722,' Sobre el problema número 7 de Smale',2,'En su célebre lista de problemas, el medalla Fields Stephen Smale incluyó una de las preguntas abiertas más importantes en Teoría de Aproximación: ¿cómo se distribuirían un número de puntos en la superficie de una esfera de forma que se minimizase su energía? Hay que entender la energía como un potencial electrostático entre los puntos (como si fueran partículas cargadas). Los orígenes modernos del problema se remontan a J. J. Thomson, descubridor del electrón, y su enunciado preciso fue propuesto por Shub y Smale en el contexto del análisis de la estabilidad del cálculo de raíces de polinomios. En mi charla presentaré el problema, su historia, sus ramificaciones y algunos progresos parciales hacia su resolución, conseguidos por decenas de personas a lo largo de muchos años.\r\n\r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es\r\n\r\nLa conferencia se podrá seguir online en\r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1602773555759?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%22ea83d9cd-950a-4129-91f9-e8ebbf7e7198%22%7d',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2020-10-22',NULL,'17:00:00','Carlos Beltrán','Universidad de Cantabria',1,'','act16102020_Carlos_beltran.jpg',NULL,'/uploads/carteles/2020/10/2020-10-22(Carlos-Beltran)Ateneo-722.pdf','',1,1),(723,'Redes para el cálculo de asociaciones fenotipo-genotipo y su uso para apoyo al diagnóstico de enfermedades raras',2,'A través de la medicina de sistemas se pueden utilizar datos de pacientes para establecer relaciones entre sus rasgos patológicos observados (fenotipos) y sus alteraciones genéticas. Mediante distintos métodos (de simililitud y probabilísticos) se puede calcular un valor de asociación para estas relaciones, de manera que se permita la selección de aquellas más significativas. Las asociaciones fenotipo-genotipo sirven para ahondar en el conocimiento de las causas genéticas y  moleculares implicadas en el desarrollo de distintas patologías. Del mismo modo, se pueden usar con herramientas predictivas para ayudar al diagnóstico de enfermedades raras.\r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es\r\n\r\nLa conferencia se podrá seguir online en\r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1605012789429?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2020-11-19',NULL,'17:00:00','Elena Rojano Rivera','Universidad de Málaga',1,'','act10112020_rojanorivera.jpg',NULL,'/uploads/carteles/2020/11/2020-11-19(Elena-Rojano-Rivera)Ateneo-723.pdf','',1,1),(724,'Machine learning: qué, por qué y cómo ',2,'Las técnicas desarrolladas en el campo del “machine learning” están haciendo posibles numerosas aplicaciones prácticas incluyendo sistemas de recomendación, detección de fraude y traducción automática, entre muchos otros. Dicha relevancia práctica está causando una gran exposición mediática plagada de terminología enigmática y alusiones a escenarios de ciencia ficción. En esta charla describiré brevemente las ideas básicas detrás de las técnicas llamadas de machine learning; desde sus principales diferencias con otros enfoques a su fundamentación matemática desarrollada en las ultimas décadas del siglo XX.\r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es\r\n\r\nLa conferencia se podrá seguir online en \r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1610388086642?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-01-21',NULL,'17:00:00','Santiago Mazuelas','Basque Center for Applied Mathematics (BCAM)',1,'','act1112021_santiago_mazuelas.jpg',NULL,'/uploads/carteles/2021/01/2021-01-21(Santiago-Mazuelas)Ateneo-724.pdf','',1,1),(725,'Microorganisms and Infections: a theoretical and computational study',2,'Adaptation to survive is a common feature of life. Microorganisms -bacteria and virus- are  not  an  exception.  Bacteria,  differently  from  virus,  can  live  in  almost  every environment, preferring surfaces where they aggregate to have a larger likelihood to survive. Such multicellular lifestyle, the biofilm, results in a much-reduced permeation of antibiotics, allows evasion of the host immune response and increase antibiotic tolerance and multiresistance.We consider the surgical insertion of indwelling medical devices (catheters, orthopedic prosthesis, etc). When one of those medical devices is implanted in a patient, bacteria ran for the foreign surface. Biofilm formation initiates and a severe infection, called hospital-acquired infection, can occur. Once a biofilm forms, systemic drug delivery cannot eliminate infection. In situ release strategies, based on avoiding biofilm formation, by dispersing antibacterial drugs in biodegradable coatings of the indwelling devices, should be implemented.  Mathematical models can provide preliminary, risk-free answers that can greatly guide preclinical and pharmaceutical research. In this talk, we present a model, based on  coupled systems of convection-diffusion-reaction PDEs, that describes the post-surgical evolution of a bacterial infection. \r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es\r\n\r\nLa conferencia se podrá seguir online en \r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1613729955974?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-02-25',NULL,'17:00:00','Paula de Oliveira','Universidade de Coimbra',1,'','act1922021_PauladeOliveira.png',NULL,'/uploads/carteles/2021/02/2021-02-25(Paula-de-Oliveira)Ateneo-725.pdf','',1,1),(726,'Regularidad genérica en problemas de frontera libre',2,'Los problemas de frontera libre son aquellos descritos por EDPs que tienen interfases (o fronteras) desconocidos a priori (libres). Este tipo de problemas aparecen en Física, Probabilidad, Biología, o Finanzas, y el estudio de las soluciones usa métodos de EDPs, Cálculo de Variaciones y Teoría Geométrica de la Medida. El principal reto matemático en este contexto es entender la regularidad de las fronteras libres. El problema del obstáculo es el ejemplo más conocido en el estudio de problemas de frontera libre. Un resultado clásico de L. Caffarelli (Acta Math. 1977) establece que las fronteras libres son $C^\\infty$, fuera de un cierto conjunto de puntos singulares. Este es uno de los principales resultados por los que recibió el premio Wolf en 2012. El objetivo de esta charla es dar una visión general de los resultados conocidos, y presentar algunos resultados nuevos en colaboración con A. Figalli y J. Serra.\r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es\r\n\r\nLa conferencia se podrá seguir online en \r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1614942244958?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-03-11',NULL,'17:00:00','Xavier Ros Otón','Universitat de Barcelona',1,'','act2522021_XavierRosOton.jpg',NULL,'/uploads/carteles/2021/03/2021-03-11(Xavier-Ros-Oton)Ateneo-726.pdf','',1,1),(729,'Limiting masses of low-mass stars as tests of modified gravity',4,'We discuss the feasibility of testing modified gravity using several limiting masses of (non-relativistic) low-mass stars such as brown dwarfs. In particular, we compute the minimum main-sequence mass for a f(R)-type extension of General Relativity, showing that it allows to constraint the extra parameter of this theory using the data on the lowest-mass stars ever observed.\r\n<b>\r\nNOTA</b>:\r\nEl seminario será presencial en el Seminario B118 de la Facultad de Ciencias (máximo de 8 personas) y online en la siguiente dirección:\r\n\r\n<a href=\"https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m47329f5a55ed30ccd6b7148fda77cd2d\" target=\"_blank\">https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m47329f5a55ed30ccd6b7148fda77cd2d</a>\r\njueves, 11 mar., 2021 11:55 | 1 hora 20 minutos | (UTC+01:00) Bruselas, Copenhague, Madrid, París\r\nNúmero de reunión: 121 469 7658\r\nContraseña: 4guGk9E6gB8\r\n\r\nUnirse mediante sistema de vídeo\r\nMarcar 1214697658@webex.com\r\nTambién puede marcar 62.109.219.4 e introducir su número de reunión.\r\n',83,'luismiguel.nieto.calzada@uva.es','Física Matemática','Seminario B118 y online','2021-03-11',NULL,'12:00:00','Diego Rubiera García','Dpto. Física Teórica, U. Complutense',1,'',NULL,NULL,'/uploads/carteles/2021/03/2021-03-11(Diego-Rubiera-Garcia)Seminario-729.pdf','',1,1),(730,'Space-time statistical models for Covid and crime data',2,'We present several statistical approaches to understand the underlying temporal and spatial dynamics of both covid and crime data that can result in informed and timely public health and security policies. \r\nFor covid data, we first consider a spatio-temporal stochastic model to explain the temporal and spatial variations in the daily number of new confirmed cases, and propose a spatio-temporal stochastic modeling approach that is able to account for the spatial, temporal and interactions effects, together with possible deterministic covariates. We also consider a small area spatio-temporal modelling proposal of Covid incidence data with the idea of developing advanced surveillance tools that allow monitoring the disease at lower disagregation levels. Human movement data is also taken into account.  \r\nFor crime data, we propose models to detect generators of crime in cities together with spatio-temporal crime risk prediction. We consider network data and ways to reduce the dimensionality of spatio-temporal data. Comments on using machine learning methods in crime data will close this second part.  \r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es. La conferencia se podrá seguir online en \r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1617793711539?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d\r\n\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-04-22',NULL,'17:00:00','Jorge Mateu','Universitat Jaume I de Castellón',1,'','act742021_foto_jorge_mateu2.jpg',NULL,'/uploads/carteles/2021/04/2021-04-22(Jorge-Mateu)Ateneo-730.pdf','',1,1),(731,'Resultado de tipo Maillet para ecuaciones en derivadas parciales no lineales totalmente características',4,'En la charla se estudian resultados de tipo Maillet en cierto tipo de ecuaciones en derivadas parciales holomorfas no lineales singulares bajo ciertas hipótesis. Mediante el uso del polígono de Newton, en $x=0$ veremos que toda serie formal solución de la ecuación pertenece a una cierta clase Gevrey, llegando al valor óptimo de esta cota en el caso general de la familia de ecuaciones en derivadas parciales.',77,'jsanzg@am.uva.es','GIR AFA-ECSING','Seminario A121','2021-04-09',NULL,'09:30:00','Alberto Lastra Sedano','Universidad de Alcalá',1,'',NULL,NULL,'/uploads/carteles/2021/04/2021-04-09(Alberto-Lastra-Sedano)Seminario-731.pdf','',1,1),(733,'Transport-based Counterfactual Explanations',4,'Counterfactual  models  aim  at  explaining  machine  learning predictions by answering questions of the form \"had  the  input  been different,  would  the  output have been the same?\" The literature mostly focused on two divergent frameworks to build these models:  the neareast  counterfactual  instance principle –which is oblivious of the latent statistical distributions, and Pearl’s causal reasoning –which relies on a model unknown in practice.  We extend a recent work that substituted causal interventions by a push-forward operator between probability distributions.  We show that this approach leads to statistically consistent counterfactual explanations, free of prior assumptions on the data generation process.',9,'tasio@eio.uva.es','G.I.R. PEM','Seminario del IMUVa, Edificio LUCIA','2021-04-20',NULL,'11:30:00','Lucas de Lara','Institut de Mathématiques de Toulouse',1,'',NULL,NULL,'/uploads/carteles/2021/04/2021-04-20(Lucas-de-Lara)Seminario-733.pdf','',1,1),(734,'Seminario Iberoamericano de Matemáticas SIM 113',4,'16.30 - 17.30 GMT+2. Marcelo Escudeiro Hernandes (Universidade Estadual de Maringá, Brasil).  \r\nTítulo: The Analytic Classification of Plane Curves.\r\n\r\nAbstract:  In this talk, we present a solution to the problem of the analytic classification of germs of plane curves with several irreducible components. Our algebraic approach follows precursive ideas of Oscar Zariski. This is a joint work with Maria Elenice Rodrigues Hernandes.\r\n\r\n17.45-18.45 GMT+2. Jorge Mozo Fernández (Universidad de Valladolid).\r\nTítulo: Singularidades nilpotentes de foliaciones de tipo Poincaré-Dulac generalizado.\r\n\r\nAbstract: Revisaremos los resultados sobre la clasificación analítica de singularidades nilpotentes de filiaciones holomorfas en dimensión dos, centrándonos en el caso en el que, en la reducción de singularidades, aparece una singularidad de tipo Poincaré-Dulac. Este es, aparentemente, el único caso que aún no ha sido tratado por los diferentes autores que han trabajado en este problema.\r\nSe trata de un trabajo en curso en colaboración con Percy Fernández (PUCP, Lima, Perú)..\r\n\r\n\r\n',52,'jorge.mozo@uva.es','GIR ECSING \"Ecuaciones y Singularidades\".','Los seminarios se podrán seguir a través de Cisco WebEx en el enlace: https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=mac5f49cd66922dd8911969db27aee69c','2021-04-30',NULL,'00:00:00','','',2,'',NULL,NULL,'/uploads/carteles/2021/04/2021-04-30()Seminario-734.pdf','',1,1),(735,'Some theoretical developments in theories beyond General Relativity within the Palatini formalism',4,'<p>In this talk I will focus on some modifications of General Relativity, particularly on the so-called f(R) gravities within the Palatini formalism. I will introduce a reformulation of the variational principle for this class of theories that allows us to obtain the analog of the Gibbons-Hawking-York term that should be subtracted in the action to establish a well-posed variational principle. Among many applications, this leads to the correct expression for the Black Hole entropy for Schwarzschild spacetimes through the Euclidean semiclassical approach. I will also present the so-called 3+1 decomposition within these theories and the derivation of the corresponding Israel junction conditions.\r\n\r\n</p><p><br></p><p><b>Unirse desde el enlace de la reunión:\r\n\r\n</b></p><p><a href=\"https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=mcc1e57bb72f852f1ef84b2d079a89253\">https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=mcc1e57bb72f852f1ef84b2d079a89253</a>\r\n</p><p><br></p><p><b>Unirse mediante el número de la reunión:\r\n\r\n</b></p><p>Número de reunión (código de acceso): 121 350 3266\r\n\r\n</p><p>Contraseña de la reunión: iQNmpk922DX\r\n</p>',83,'luismiguel.nieto.calzada@uva.es','Física Matemática','Seminario B118 (máximo 8 personas) y online','2021-04-29',NULL,'12:00:00','Diego Sáez-Chillón Gómez','Univ. Valladoliod',2,'',NULL,NULL,'/uploads/carteles/2021/04/2021-04-29(Diego-Saez-Chillon-Gomez)Seminario-735.pdf','',1,1),(736,'One sphere to determine all the other structures',2,'The celebrated Mazur--Ulam theorem (1932) implies that the underlying metric space associated with any normed space determines uniquely its structure of vector space. This conclusion was improved by P. Mankiewicz in 1972 by establishing that every surjective isometry between the metric spaces given by the closed unit balls of two normed spaces admits an extension to a surjective real linear isometry between the spaces, that is, the metric space determined by the closed unit ball of a normed space determines the whole structure of the space. \r\nIn 1987, D. Tingley introduced a new perspective by considering the following problem: Suppose $\\Delta : S(X) \\to S(Y)$ is a surjective isometry between the unit spheres of two Banach spaces $X$ and $Y$. Does $\\Delta$ admit an extension to a surjective linear isometry from $X$ onto $Y$?\r\n\r\nA solution to Tingley\'s problem has been pursued by many researchers during the last thirty years for a wide list of Banach spaces; positive answers have been found for some concrete structures. This talk will be devoted to survey some of the recent advances on Tingley\'s problem in several concrete cases. The talk will be completely expository to be accessible to a wide audience.\r\n\r\nNota: La capacidad de la Sala de Grados está limitada a 13 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es. La conferencia se podrá seguir online en \r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1621838236043?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d\r\n\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-05-27',NULL,'17:00:00','Antonio Peralta','Universidad de Granada',1,'','act1852021_Photo_AMPeralta.jpg',NULL,'/uploads/carteles/2021/05/2021-05-27(Antonio-Peralta)Ateneo-736.pdf','',1,1),(737,'La Química de las estrellas',4,'La caracterización de estrellas de tipo solar es fundamental para varios campos de estudio en astrofísica como la detección de exoplanetas y la evolución química de nuestra Galaxia. La determinación de abundancias químicas de estrellas a diferentes metalicidades (i.e. con diferentes contenido de Fe) y edades nos sirve para entender cómo y cuando se formaron los diferentes elementos químicos en la Galaxia. Las diferencias químicas en distintas partes de la Galaxia (disco, bulbo y halo) también nos ayudan a entender cómo estas poblaciones fueron formadas. Por otro lado, a nivel individual es primordial conocer cómo es una estrella para poder detectar sus planetas y caracterizar su masa, radio, estructura y composición interna. La posibilidad de formar planetas tiene una dependencia clara en la composición química de las estrellas, y estos planetas a su vez pueden modificar su composición. En esta charla repasaré algunos de los resultados más importantes en estos temas.\r\n\r\n\r\nOBSERVACIÓN: En el Seminario solo hay posibilidad de 8 asistentes, pero puede accederse a la charla a través de Webex: https://universidaddevalladolid.webex.com/meet/luismiguel.nieto.calzada',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Seminario B118 y online','2021-06-08',NULL,'11:00:00','Dra. Elisa Delgado-Mena','Instituto de Astrofísica e Ciências do Espaço (IA-Porto)',2,'',NULL,NULL,'/uploads/carteles/2021/06/2021-06-08(Dra.-Elisa-Delgado-Mena)Seminario-737.pdf','',1,1),(738,'Estimating time-dependent transmission rates in Bayesian models based on compartmental dynamics. ',4,'Compartmental models have had great success applied to epidemiology. In the recent context of the SARS-Cov-2 (Covid 19) pandemic, interest in these models has skyrocketed. It is very attractive to be able to model the dynamics of the spread of a disease in a deterministic fashion through a few parameters and a system of Ordinary Differential Equations (ODEs). However, some of the assumptions required in the popular Susceptible-Infected-Removed (SIR) and Susceptible-Exposed-Infectious-Removed (SEIR) models are very restrictive. Additionally, in the spread of a disease there are many random factors to be considered and data tends to be extremely noisy. Hence, in dealing with SIR and SEIR models  a probabilistic approach may be advisable.\r\n\r\nIn this work we consider SIR, SEIR and extensions with time-dependent transmission rates in a Bayesian setting. Our aim is to estimate the parameters that govern the dynamics of the spread of the disease.  Time-dependent transmission rates allow to capture changes in the dynamics of a disease produced by external factors, for example confinement measures. Bayesian techniques allow us to incorporate a priori knowledge which may be available through medical studies and help us account for some of the randomness in the data. Our approach is data driven and is based on a B-spline basis representation of the time dependent transmission rate and on Hamiltonian Monte Carlo. We provide synthetic and real data examples (on SARS-Cov-2 daily incidence) and discuss advantages and limitations of our methods.',9,'tasio@eio.uva.es','G.I.R. PEM','Seminario del IMUVa, Edificio LUCIA','2021-06-16',NULL,'12:00:00','Hristo Inouzhe','Basque Center for Applied Mathematics',1,'',NULL,NULL,'/uploads/carteles/2021/06/2021-06-16(Hristo-Inouzhe)Seminario-738.pdf','',1,1),(739,'Una perspectiva geométrica al transporte en el océano y la atmósfera ',2,'Herramientas propias de los sistemas dinámicos proporcionan un marco geométrico muy potente para describir el transporte en fluidos. En este seminario haré una breve introducción a los Descriptores Lagrangianos y a su uso para describir el transporte en dos casos seleccionados. En el primero analizamos desde esta perspectiva la evolución del vertido de petróleo tras el hundimiento del pesquero Oleg Naydenov en 2015 en la costa de Gran Canaria. En el segundo analizamos los procesos de transporte relacionados con un fenomeno climático de gran importancia para el Sahel: el monzón de África occidental.\r\n\r\nNota: La capacidad de la Sala de Grados I está limitada a 13 personas. Para asistencia presencial se ruegaconfirmación en la dirección bcano@uva.es. La conferencia se podrá seguir online en\r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1624617752892?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-07-02',NULL,'12:00:00','Ana M. Mancho','Instituto de Ciencias Matemáticas (ICMAT)',1,'','act2562021_AnaMancho.jpg',NULL,'/uploads/carteles/2021/07/2021-07-02(Ana-M.-Mancho)Ateneo-739.pdf','',1,1),(740,'Topology and parameter estimation for an electrical network based on algebraic variety learning and graph sparsification',9,'Electric power systems are going through significant changes. On one side, they are in rapid expansion, which makes it hard for system operators to know the crucial information of its topology and cable parameters. On the other side, there is an improvement on the quality and quantity of available power and voltage measurements on them that can be used to estimate this information. We propose two algorithms that work with power and voltage measurements as input. The first one estimates the cable parameters of a DC or a balanced AC electrical network from a known topology using techniques of numerical algebraic geometry. The second one estimates simultaneously the topology and data cable of any DC network, or an AC low-voltage distribution network whose line inductances are significantly smaller in magnitude than line resistances, combining the first algorithm with techniques of spectral graph theory, in a iterative procedure inspired by machine learning.\r\n\r\nBoth algorithms are tested on several electrical networks.',9,'tasio@eio.uva.es','','Sala de Grados II, Facultad de Ciencias','2021-07-02',NULL,'09:00:00','Álvaro Samperio Valdivieso','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2021/07/2021-07-02(Alvaro-Samperio-Valdivieso)Seminario-de-Doctorado-740.pdf','',0,0),(741,'Sequences of point blow-ups from a combinatorial point of view',9,'Fixed a perfect field $k$, we will focus on the study of sequential morphisms, that is morphism which can be expressed, in at least one way, as a composition of a sequence of blow-ups of smooth $d$-dimensional projective varieties over $K$, with $K$ and algebraic extension of $k$ such that $K\\subset\\overline{k}$. The motivation is that this kind of morphisms play a central role on singularity theory due to the existence of embedded resolutions of singular projective varieties. More concretely, we are interested in finding the geometrical information encoded by the numerical data given by the multilinear intersection form on divisors with exceptional support. In order to consider different fields $K$, with $k\\subset K\\subset\\overline{k}$, we will define the notion of compatible partition of the exceptional divisor $E$.\r\nOur main tool will be the existence of regular and projective divisorial contractions under certain hypothesis. After defining combinatorial and algebraic equivalence for both sequences of point blow-ups and their associated sequential morphism, we will revisit the key concept of final divisor and characterize it by some numerical criteria. ',9,'tasio@eio.uva.es','','Sala de Grados II, Facultad de Ciencias','2021-07-02',NULL,'09:45:00','Daniel Camazón','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(742,'Private Information Retrieval',9,'Data is kept in the Distributed Storage System(DSS), protecting users from monitoring. Private Information Theory(PIR) is a method used to obtain the information requested from DSS without the knowledge of the server. One way to obtain data without the knowledge of the server is to request all the information from the server, but this method has a high communication cost. In literature, many techniques have been used to find an effective algorithm. In one of them, MDS codes that work in large fields are used. In this study, we prefer to use cyclic codes to work in smaller fields than MDS codes. We obtained better privacy and rate system than binary RM code based on our obtained data.',9,'tasio@eio.uva.es','','Sala de Grados II, Facultad de Ciencias','2021-07-02',NULL,'10:30:00','Seyma Bodur','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(743,'Quasianalyticity criteria in Mandelbrojt domains',9,'A Mandelbrojt region is a (not necessarily sectorial) connected open set $D$ in the Riemann surface of the logarithm with 0 in its boundary, symmetric with respect to a direction and with a positive opening (in a precise sense).\r\nIn 1952, S. Mandelbrojt gave a characterization of the injectivity of the asymptotic Borel mapping for the class of functions admitting uniform $ \\M $-asymptotic expansion in these domains, where the control of the remainders is specified in terms of a given weight sequence $\\M$ of positive real numbers. His criterion consists of the divergence of an integral where the sequence $\\M$ and the boundary of $D$ naturally appears. However, for the closely related Carleman-Roumieu ultraholomorphic class in $D$ consisting of the holomorphic functions with uniformly bounded derivatives in terms of the sequence $ \\M $, no such general criterion is known. We will briefly discuss some partial results for unbounded sectors, for convex domains and for bounded domains, and give some hints about our approach in order to fully solve this problem in similar terms as in Mandelbrojt\'s result.',9,'tasio@eio.uva.es','','Sala de Grados II, Facultad de Ciencias','2021-07-02',NULL,'11:05:00','Ignacio Miguel','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(744,'A Simple Parametric Representation of the Hodgkin-Huxley Model',9,'The Hodgkin-Huxley model, decades after its first presentation, is still a reference model in neuroscience as it has successfully reproduced the electrophysiological activity of many organisms. The primary signal in the model represents the membrane potential of a neuron. A simple representation of this signal is presented in \\cite{Rod21}.\r\nThe new proposal is an adapted Frequency Modulated Möbius multicomponent model defined as a signal plus error model in which the signal is decomposed as a sum of waves. The main strengths of the method are the simple parametric formulation, the interpretability and flexibility of the parameters that describe and discriminate the waveforms, the estimators\' identifiability and accuracy, and the robustness against noise.\r\nThe approach is validated with a broad simulation experiment of Hodgkin-Huxley signals and real data from squid giant axons. Interesting differences between simulated and real data emerge from the comparison of the parameter configurations. Furthermore, the potential of the FMM parameters to predict Hodgkin-Huxley model parameters is shown using different Machine Learning methods. Finally, promising contributions of the approach in Spike Sorting and cell-type classification are detailed.',9,'tasio@eio.uva.es','','','2021-07-02',NULL,'13:10:00','Alejandro Rodríguez','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(745,'Central limit theorem for general transportation costs',9,'We consider the problem of optimal transportation with general  cost between a empirical measure and a general target probability on $\\mathbb{R}^{d}$, with $d\\geq 1$. We extend results in del Barrio and Loubes and prove asymptotic stability of both optimal transport maps and potentials for a large class of costs in $\\mathbb{R}^{d}$. We derive a central limit theorem (CLT) towards a Gaussian distribution for the empirical transportation cost under minimal assumptions, with a  new proof  based on the Efron-Stein inequality and on the sequential compactness  of the closed unit ball in $L_{2}(\\mathbb{P})$ for the weak topology.\r\n',9,'tasio@eio.uva.es','','Sala de Grados II, Facultad de Ciencias','2021-07-02',NULL,'13:45:00','Alberto González Sanz','Universidad de Valladolid',1,'',NULL,NULL,NULL,'',0,0),(746,'Sobre la conjetura de M. Crouzeix ',2,'Las evaluaciones del tipo $f(A) u$, donde $A:  H \\to H$ es un operador  lineal en un espacio de Hilbert, $u \\in H$ y $f$ es una función holomorfa definida al menos en el espectro de $\\sigma(A)$, aparecen en un sinnúmero de situacionnes de interés, tanto teóricas como aplicadas. Tras motivar esta afirmación con algunos ejemplos, se plantean tanto  la pregunta de cómo poder estimar $\\| f(A) u \\|$, como la necesidad de poder llevar a cabo numéricamente dicha evacluación. Va a ser útil considerar  el  recorrido numérico de $A$\r\n$$w(A)=\\{ \\langle A x, x \\rangle \\, : \\, x \\in H, \\, \\| x \\| = 1 \\},$$\r\nconjunto que  con frecuencia podemos situar en el plano complejo, vía el método de la energía. \r\nInspirado en  resultados válidos en discos (V. Newman, Berger & Stampfli, Ando & Okubo),  M. Crouziex conjeturó que\r\n$$\\| f(A) \\| \\le K \\max_{z \\in w(A) } |f(z)|,$$ siendo $K = 2$. Junto con ciertos  avances en este problema, en la charla se destaca su interés en  conexión el análisis de  los métodos de Krylov,  especialmente adecuados para problemas de grandes dimensiones en los que ya no es viable representar $A$ como una matriz. \r\n\r\nEsta conferencia está basada en el artículo de M. Crouzeix y C. Palencia titulado \'The numerical range is a (1 + √2)-spectral set\', que ha recibido el \"SIAM Activity Group on Linear Algebra Best Paper Prize\" en 2021.',9,'tasio@eio.uva.es','','Sala de Grados, Escuela de Ingeniería Informática','2021-09-30',NULL,'17:00:00','César Palencia','Universidad de Valladolid',1,'','act2292021_CesarPalencia.png',NULL,'/uploads/carteles/2021/09/2021-09-30(Cesar-Palencia)Ateneo-746.pdf','',1,1),(747,'Alan Turing, 29000 patitos de goma y un problema de un millón de dólares',2,'El movimiento de un fluido incompresible no viscoso se rige por las ecuaciones de Euler. Para fluidos viscosos, el análogo viene dado por las ecuaciones de Navier-Stokes. Las existencia de soluciones regulares de estas ecuaciones en derivadas parciales es uno de los problemas del milenio pendientes de resolver. En 1936, Alan Turing demostró que el problema de la parada de la Máquina de Turing es indecidible en el sentido que ninguna máquina de Turing lo puede resolver. En 1992, 29000 patitos de goma se perdieron en el océano Pacífico en una tormenta. Viajaban de Hong Kong a Tacoma en un carguero. Estos patitos de goma han aparecido en varias partes del planeta muchos años después.Sus trayectorias erráticas  han sido objeto de varios estudios de corrientes en Oceanografía (obras de Curtis Ebbesmeyer y James Ingraham).\r\n\r\nEn este coloquio ilustraré cómo demostramos que ciertas trayectorias de fluidos son indecidibles. Lo haremos construyendo un flujo de Euler tridimensional con la propiedad de ser Turing-completo.  La indecidibilidad de las trayectorias de los fluidos es entonces una consecuencia de la  indecidibilidad clásica del problema de la parada. Contra todo pronóstico, la demostración utiliza fuertemente la geometría diferencial y un espejo que permite traducir ciertos problemas de Fluidos en problemas geométricos.\r\n\r\nNuestro trabajo está motivado por el enfoque de Terry Tao para atacar el problema del millón de dólares de Navier-Stokes. ',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2021-10-21',NULL,'17:00:00','Eva Miranda','Universitat Politècnica de Catalunya',1,'','act15102021_EvaMiranda.jpg',NULL,'/uploads/carteles/2021/10/2021-10-21(Eva-Miranda)Ateneo-747.pdf','',1,1),(748,'Global geometry of surfaces defined by non-positive at infinity valuations',4,'In this talk we consider plane divisorial valuations of Hirzebruch surfaces and introduce the concept of non-positivity at infinity. We see that the surfaces given by valuations of the last types have nice global and local geometric properties. Moreover, non-positive at infinity divisorial valuations are those divisorial valuations of Hirzebruch surfaces providing rational surfaces with minimal generated cone of curves.  Finally, we compute the Seshadri-type constants for pairs formed by a big divisor and a divisorial valuation of a Hirzebruch surface and obtain the vertices of the Newton-Okounkov bodies of pairs as above under the non-positivity at infinity property.\r\n\r\nEste es el primer seminario de una serie de dos.',110,'diego.ruano@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2021-10-22',NULL,'12:00:00','Carlos Jesús Moreno Ávila','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2021/10/2021-10-22(Carlos-Jesus-Moreno-Avila)Seminario-748.pdf','',1,1),(749,'The Low Surface Brightness realm in the lives of galaxies, and what we are working on from the UVa',4,'As this is my first talk as a UVa member, I will illustrate why Astrophysics and Galaxy Formation & Evolution are relevant for our comprehension of the Universe and its potential for the future at our university. Then, I will review the topic where I have been focusing my efforts during the last years, the Low Surface Brightness regime in regards to extragalactic studies. I will explain why gaining access to the outer and faintest parts of galaxies is important to learn how these objects first formed, and to track their progressive assembly over cosmic time. However, if we are to extract all the information we need from next generation facilities (the James Webb Space Telescope or the synoptic telescopes) one also has to take special care on how their data is reduced and analysed, especially considering the enormous amount of data to come. I will finish by detailing our duties within the Euclid Space Telescope consortium, where we are leading the working package on diffuse light, and we will describe at length the meaning of this subject.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-10-20',NULL,'12:00:00','Fernando Buitrago','UVa',1,'',NULL,NULL,'/uploads/carteles/2021/10/2021-10-20(Fernando-Buitrago)Seminario-749.pdf','',1,1),(750,'Global geometry of surfaces defined by non-positive at infinity valuations',4,'In this talk we consider plane divisorial valuations of Hirzebruch surfaces and introduce the concept of non-positivity at infinity. We see that the surfaces given by valuations of the last types have nice global and local geometric properties. Moreover, non-positive at infinity divisorial valuations are those divisorial valuations of Hirzebruch surfaces providing rational surfaces with minimal generated cone of curves.  Finally, we compute the Seshadri-type constants for pairs formed by a big divisor and a divisorial valuation of a Hirzebruch surface and obtain the vertices of the Newton-Okounkov bodies of pairs as above under the non-positivity at infinity property. This talk is based on a joint work with C. Galindo and F. Monserrat.\r\n\r\nEste es el segundo seminario de una serie de dos.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA.','2021-10-29',NULL,'12:00:00','Carlos Jesús Moreno Ávila','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2021/10/2021-10-29(Carlos-Jesus-Moreno-Avila)Seminario-750.pdf','',1,1),(751,'Supermassive black holes: flares from the galactic center and electromagnetic counterpart to the coalescence of binaries',4,'In this talk, I will present the two sides of my current work, focused on unitary and binary black holes. First, I will introduce a model to explain the flares (rises of activity) of Sagittarius A$^*$, the black hole (BH) at the center of the Milky Way, with the episodic accretion of material. The specificity lies in the pipeline to test it: general relativistic (GR) magneto-hydrodynamical simulations, post-processed with a GR ray-tracing code to produce light-curves and energy spectra, to be directly compared with observations. Then, I will show how we can, using the same tools, predict the electromagnetic counterpart to the fusion of supermassive BHs. Such a signal would give us new constraints on the speed of gravitational waves, test GR in the strong field regime and our scenarios of galaxy formation/mergers. For that purpose, an additional ingredient is required: the curved spacetime around binary BHs.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-10-27',NULL,'13:00:00','Raphaël Mignon-Risse','Paris Diderot University',1,'',NULL,NULL,'/uploads/carteles/2021/10/2021-10-27(Raphael-Mignon-Risse)Seminario-751.pdf','',1,1),(752,'Branched flow and superwires in periodic systems',4,'Waves propagating through random media can accumulate in strong branches, intensifying fluctuations and powerful phenomena such as tsunamis. However, branched flow is not restricted to the large scale, and here, we find surprisingly that branched flow is not restricted to random media. We show that quantum waves living in the high Brillouin zones of periodic potentials also branch. Moreover, some of these branches do not decay as in random media but remain robust indefinitely, creating dynamically stable channels that we call superwires. The waves in these stable branches have enough energy to surmount the channel potential and go elsewhere, but classically, nonlinear dynamics keeps them confined within the channel. These results have direct experimental consequences for superlattices and optical systems.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-11-05',NULL,'13:00:00','Álvar Daza Esteban','Departamento de Biología y Geología, Física y Química Inorgánica, U. Rey Juan Carlos',1,'',NULL,NULL,'/uploads/carteles/2021/11/2021-11-05(Alvar-Daza-Esteban)Seminario-752.pdf','',1,1),(753,'Perspectivas sobre el aprendizaje algorítmico y sus conexiones con el análisis, el álgebra y la geometría',2,'La importancia del aprendizaje algorítmico (machine learning) en el mundo actual es manifiesta, aunque solo fuese por su sostenida presencia en los medios de comunicación y por las previsiones sobre su extraordinario desarrollo e impacto en los próximos años. Pero también es claro que, en estas presentaciones generalistas, incluidas las más meritorias, no se presta demasiada atención a las raíces científicas, y menos aún a las raíces matemáticas, por la simple razón de que presuponen un conocimiento más o menos especializado que solo se puede adquirir con estudios sistemáticos.\r\nEn este coloquio se revisarán primero algunas de las claves generales que concurren en el éxito del aprendizaje algorítmico, con ilustraciones sobre su evolución histórica y sobre su incidencia en diversas esferas de la actividad humana, y con algunas apreciaciones sobre las tendencias evolutivas que se perciben en la actualidad. \r\nDespués se explorarán algunas de las potencialidades que el análisis, el álgebra y la geometría ofrecen para contribuir positivamente a la investigación en aprendizaje algorítmico. En la dirección opuesta, se considerará de qué manera el álgebra y la geometría, o las matemáticas en general, se pueden beneficiar de las tendencias actuales y futuras en el campo del aprendizaje automático.',9,'tasio@eio.uva.es','','Aula 101, Aulario Facultad de Ciencias','2021-11-12',NULL,'12:00:00','Sebastià Xambó-Descamps','Universitat Politècnica de Catalunya',1,'','act6112021_SXD-BFME.jpg',NULL,'/uploads/carteles/2021/11/2021-11-12(Sebastia-Xambo-Descamps)Ateneo-753.pdf','',1,1),(754,'Introducción a la Computación Cuántica',4,'Recientemente la Computación Cuántica está apareciendo en los medios de comunicación de manera reiterada. El compromiso del gobierno de España, hace unas semanas, de construir el primer computador cuántico de Europa con un aporte millonario de recursos económicos o el anuncio de China de haber construido un computador cuántico con una capacidad de procesamiento de la información fabulosa hace menos de un mes ha impulsado el interés, tanto académico como empresarial, en retomar la formación y la investigación en este área.\r\nEn el presente seminario introduciremos los conceptos fundamentales de la computación cuántica; el bit cuántico (qubit), el paralelismo cuántico, la superposición y el entrelazamiento de estados cuánticos y se ilustrarán dichos conceptos mediante la implementación de un algoritmo de búsqueda cuántico (el algoritmo de Grover) o la comunicación entre dos interlocutores separados espacialmente mediante la teleportación cuántica.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Aula 006, ETS de Ingeniería Informática (Campus Miguel Delibes)','2021-11-11',NULL,'12:00:00','Juan José Álvarez','Departamento de Informática (ATC, CCIA y LSI), Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2021/11/2021-11-11(Juan-Jose-Alvarez)Seminario-754.pdf','',1,1),(755,'On our way to describe the unseen: dark energy, black holes and wormholes',4,'In the current talk, we will first revise the well known wcdm model\r\nfor several ranges of the equation of state parameter of the dark\r\nenergy sector encoded on the parameter w. We will then present some\r\nphantom dark energy models that fully fit the available observational\r\ndata. Those models are harmless from a quantum point of view, in the\r\nsense that the singularities or abrupt events they might induce are\r\ncured at the quantum level. In addition, some of those models can\r\nsupport  regular blackholes as well as wormholes that do not require\r\nmatter with a wrong kinetic term.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I','0000-00-00',NULL,'12:00:00','Mariam Bouhmadi-López','Ikerbasque and University of the Basque Country',2,'',NULL,NULL,NULL,'',1,1),(756,'On our way to describe the unseen: dark energy, black holes and wormholes',4,'In the current talk, we will first revise the well known wcdm model\r\nfor several ranges of the equation of state parameter of the dark\r\nenergy sector encoded on the parameter w. We will then present some\r\nphantom dark energy models that fully fit the available observational\r\ndata. Those models are harmless from a quantum point of view, in the\r\nsense that the singularities or abrupt events they might induce are\r\ncured at the quantum level. In addition, some of those models can\r\nsupport  regular blackholes as well as wormholes that do not require\r\nmatter with a wrong kinetic term.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I','0000-00-00',NULL,'00:00:00','Mariam Bouhmadi-López','Ikerbasque and University of the Basque Country',2,'',NULL,NULL,NULL,'',1,1),(757,'On our way to describe the unseen: dark energy, black holes and wormholes',4,'In the current talk, we will first revise the well known wcdm model for several ranges of the equation of state parameter of the dark energy sector encoded on the parameter w. We will then present some phantom dark energy models that fully fit the available observational data. Those models are harmless from a quantum point of view, in the sense that the singularities or abrupt events they might induce are cured at the quantum level. In addition, some of those models can support  regular blackholes as well as wormholes that do not require matter with a wrong kinetic term.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I','0000-00-00',NULL,'12:00:00','Mariam Bouhmadi-López','Ikerbasque and University of the Basque Country',2,'',NULL,NULL,NULL,'',1,1),(758,'On our way to describe the unseen: dark energy, black holes and wormholes',4,'In the current talk, we will first revise the well known wcdm model for several ranges of the equation of state parameter of the dark energy sector encoded on the parameter w. We will then present some phantom dark energy models that fully fit the available observational data. Those models are harmless from a quantum point of view, in the sense that the singularities or abrupt events they might induce are cured at the quantum level. In addition, some of those models can support  regular blackholes as well as wormholes that do not require matter with a wrong kinetic term.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-11-17',NULL,'12:00:00','Mariam Bouhmadi-López','Ikerbasque and University of the Basque Country',1,'',NULL,NULL,'/uploads/carteles/2021/11/2021-11-17(Mariam-Bouhmadi-Lopez)Seminario-758.pdf','',1,1),(759,'Cosmology with wide-area extragalactic radio surveys from SKA pathfinders',4,'We are currently living a blooming era of wide-field optical cosmological surveys, either spectroscopic such as Dark Energy Spectroscopic Instrument (DESI) or photometric such as the ongoing Dark Energy Survey (DES), the future Large Synoptic Survey Telescope (LSST) or future imaging component survey of EUCLID. By analyzing the distribution of matter clustering, we can use the growth of structure, in combination with measurements of the expansion of the Universe, to understand dark energy or to test different models of gravity. However, we also live in the multi-tracer and multi-messenger astrophysics era. In particular, during the next decades, radio surveys will map the matter distribution at high redshifts, especially covering the current redshift desert between early and late expansion, crucial to discriminate between current cosmological theoretical models. Like with optical data, there are radio imaging  surveys such as radio continuum surveys such as the ongoing Evolutionary Map of the Universe (EMU), a program of the Australian Square Kilometre Array Pathfinder (ASKAP), or spectroscopic by measuring the hydrogen 21cm line, such as Wallaby. However, we can also use intensity mapping as a low resolution spectroscopic technique in which we use the intensity given by the emission from neutral hydrogen from patches of the sky, at different redshifts, with surveys such as Tianlai or CHIME. By cross-correlating these maps with galaxy catalogues we can improve our constraints on cosmological parameters and to understand better how neutral hydrogen populates different types of galaxies and haloes. Creating realistic mock intensity mapping catalogues is key to optimize the future analysis of data. I will introduce the simulated neutral hydrogen full sky catalogues that we have created, using the Horizon run 4 simulations. In particular, I will show the prospects of measuring the growth rate of structures with only intensity mapping information from surveys such as Tianlai around redshift z=1 and the prospects of cross-correlating the intensity mapping information with optical galaxy catalogues, such as DESI or Euclid, especially regarding BAO measurements. I will also show the prospects to constrain ultra-light axion dark matter mass with low-frequency 21cm line intensity mapping.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-11-24',NULL,'13:00:00','Jacobo Asorey','Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid',1,'',NULL,NULL,'/uploads/carteles/2021/11/2021-11-24(Jacobo-Asorey)Seminario-759.pdf','',1,1),(760,'AG-códigos transitivos por bloques',4,'En esta charla presentaremos algunas construcciones de códigos AG, o códigos definidos mediante la evaluación de funciones racionales en puntos racionales de una curva, con propiedades adicionales a la linealidad. Veremos que usando torres de cuerpos de funciones podemos construir familias de códigos que llamamos bloque-transitivos que alcanzan la cota de Tsfasman-Vladut-Zink sobre cuerpos finitos de cardinalidad cuadrada. Además expondremos una construcción de códigos cíclicos AG utilizando el grupo de automorfismos de un cuerpo de funciones de una curva, y veremos que estos códigos están  fuertemente relacionados con extensiones cíclicas. ',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA.','2021-11-26',NULL,'12:00:00','María Chara','Universidad Nacional del Litoral (UNL)',1,'',NULL,NULL,'/uploads/carteles/2021/11/2021-11-26(Maria-Chara)Seminario-760.pdf','',1,1),(761,'Light rings as a probe of new gravitational physics in shadow observations',4,'We discuss the main features of shadow observations with special care to the presence of a sequence of light rings surrounding the central depression in optically-thin accretion disks. Considering the case of infinitely thin accretion disk we use three analytical model to reconstruct the optical appearances of several ultra-compact objects beyond the Schwarzschild solution. We discuss the chances of detecting new gravitational physics via the observation of these light rings using very-long baseline interferometry.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-12-02',NULL,'12:00:00','Diego Rubiera-García','Universidad Complutense',1,'',NULL,NULL,'/uploads/carteles/2021/12/2021-12-02(Diego-Rubiera-Garcia)Seminario-761.pdf','',1,1),(762,'Study of the algebraic integrability of plane foliations by their extension to Hirzebruch surfaces',4,'We consider foliations with isolated singularities on the complex plane and determine some necessary conditions for them to admit a rational first integral. These criteria are based on data obtained from the resolution of dicritical singularities of the extended foliation to Hirzebruch surfaces.\r\n\r\nThis is a joint work with C. Galindo and F. Monserrat.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA.','2021-12-17',NULL,'12:00:00','Elvira Pérez Callejo','Universitat Jaume I',1,'',NULL,NULL,'/uploads/carteles/2021/12/2021-12-17(Elvira-Perez-Callejo)Seminario-762.pdf','',1,1),(763,'Atmósferas planetarias: transporte radiativo en gigantes gaseosos',4,'Uno de los problemas que presenta el estudio de nuestra atmósfera es relativo a las observaciones ya que nunca acontecen bajo las mismas condiciones, lo cual es una dificultad importante tanto para estudiar el clima como para conocer la variabilidad meteorológica local en escalas temporales pequeñas. Entonces ¿cómo podemos validar nuestras teorías y modelos si no podemos variar las condiciones de nuestra atmósfera?. La solución, o parte de ella, la tenemos en planetas gigantes gaseosos (Júpiter y Saturno), los cuales son laboratorios naturales para la meteorología planetaria. Sin embargo el estudio de las atmósferas de estos planetas presenta una dificultad importante y es que no se ha encontrado una teoría que explique la naturaleza de su movimiento atmosférico en conjunto. ¿Cómo puede ser que estos planeta mantengan un sistema de vientos tan intenso a pesar de recibir una fracción tan pequeña de radiación solar en comparación con recibida por la tierra?. En estos gigantes gaseosos encontramos una fuente importante de energía interna por lo que el balance energético debe ser hecho entre la radiación de longitudes de onda larga y la radiación eminentemente visible procedente del Sol. Para poder comprender este balance debemos conocer como es la distribución vertical de aerosoles, partículas, nieblas y nubes que van a interaccionar con la radiación incidente reflejándola, difundiéndola o absorbiéndola. Esto incluye una gran cantidad de procesos diferentes que son dependientes tanto de la naturaleza de la materia como de la longitud de onda. A partir del análisis de la radiación procedente de estos planetas en diferentes longitudes de onda y utilizando el método inverso de la ecuación de transporte radiativo podemos deducir las propiedades de las atmósferas de estos gigantes gaseosos.',83,'luismiguel.nieto.calzada@uva.es','MathPhys','Sala de Grados I (Facultad de Ciencias)','2021-12-14',NULL,'12:00:00','José Francisco Sanz-Requena','UVa & UEMC',1,'',NULL,NULL,'/uploads/carteles/2021/12/2021-12-14(Jose-Francisco-Sanz-Requena)Seminario-763.pdf','',1,1),(764,'Introducción a la teoría de fibrados vectoriales y clases características',4,'Se trata de un curso que se dearrollará en tres sesiones, de 1h 30 min de duración cada una. Estudiaremos el problema de clasificación de fibrados vectoriales reales o complejos, con mayor énfasis en el caso complejo y holomorfo, como algunas aplicaciones a geometría y foliaciones holomorfas.\r\n\r\nI sesión: \r\n1) Dos teoremas clásicos:\r\n\r\n   Teorema de Gauss-Bonnet.\r\n   Teorema de Poincaré-Hopf.\r\n\r\nFibrados vectoriales de rango r y secciones.\r\n   i) $V\\subset E\\stackrel{\\pi}{\\longrightarrow} M$ donde $V$ es un espacio vectorial de $\\dim(V)=r$ sobre $\\mathbb{K}=\\mathbb{R}$ o $\\mathbb{C}$.\r\n\r\n  ii) $Vect^r_{\\mathbb{K}}(M)_{\\mathcal{A}}$ Clases de equivalencia módulo isomorfismo de rango r  de fibrados vectoriales en la categoría $\\mathcal{A}$ cómo \r\n            $H^1(M,GL(n,\\mathcal{A})$, dónde $\\mathcal{A}=\\mathcal{C}^{\\infty}_{\\mathbb{K}}$ o $\\mathcal{A}=\\mathcal{O}$ para el caso holomorfo.\r\n\r\n  iii) Fibrados Tautológicos sobre la variedad de Grassman y fibrado universal.\r\n                                   $Vect^r_{\\mathbb{K}}(M)_{\\mathcal{C}^{\\infty}}=[M,Gr_{\\mathbb{K}}(M)]$\r\n\r\nEjemplo: Orientación como un elemento de $Vect^r_{\\mathbb{R}}(M)\\ni E\\mapsto w_1(E)\\in H^1(M,\\mathbb{Z}_2)$.\r\n\r\n  iv) Definición axiomática de clases de Chern (caso complejo).\r\n   v) Idea de la construcción de las clases de Chern (Principio de escisión). \r\n  \r\n El curso se desarrollará de manera presencial. Con el objeto de reservar un espacio con el aforo adecuado, se ruega que confirmen a la dirección gir.ecsing@uva.es la intención de participar en el mismo. ',9,'tasio@eio.uva.es','ECSING (Ecuaciones y Singularidades)','Aula 306, Aulario de la Facultad de Ciencias','2022-01-12',NULL,'10:00:00','Omegar Calvo Andrade','Centro de Investigación en matemáticas (CIMAT). Guanajuato (México).',1,'',NULL,NULL,'/uploads/carteles/2022/01/2022-01-12(Omegar-Calvo-Andrade)Seminario-764.pdf','',1,1),(765,'Estimación de funciones en grafos: límites contínuos y métodos de muestreo',2,'En esta charla presentaré nueva teoría y metodología para  la estimación Bayesiana de funciones en grafos, con aplicaciones en  aprendizaje semi-supervisado y problemas inversos en variedades. La  presentación tendrá dos partes. En la primera, probaré la  convergencia de la medida posterior según el número de nodos tiende  a infinito. En la segunda, estudiaré cómo utilizar la convergencia  de la medida posterior para diseñar métodos de muestreo cuya tasa de  convergencia es independiente del número de nodos.\r\n\r\nNota: La capacidad de la Sala de Grados I está limitada a 33 personas. Para asistencia presencial se ruega confirmación en la dirección bcano@uva.es. La conferencia se podrá seguir online en\r\n\r\nhttps://teams.microsoft.com/l/meetup-join/19%3a058a50eb876847918f2245435535992e%40thread.tacv2/1641812020225?context=%7b%22Tid%22%3a%225f2a1fdf-b755-40df-8d23-5c8d19455375%22%2c%22Oid%22%3a%222b25a16b-97c7-4ba5-91fb-301c759828f3%22%7d',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2022-01-13',NULL,'17:00:00','Daniel Sanz Alonso','The University of Chicago',1,'','act1012022_DanielSanz.jpg',NULL,'/uploads/carteles/2022/01/2022-01-13(Daniel-Sanz-Alonso)Ateneo-765.pdf','',1,1),(766,'Introducción a la teoría de fibrados vectoriales y clases características',4,'Se trata de un curso que se dearrollará en tres sesiones, de 1h 30 min de duración cada una. Estudiaremos el problema de clasificación de fibrados vectoriales reales o complejos, con mayor énfasis en el caso complejo y holomorfo, como algunas aplicaciones a geometría y foliaciones holomorfas.\r\n\r\n\r\nII Sesión:\r\n\r\n  1) Conexiones (concepto de derivar secciones) y curvatura.\r\n\r\n  2) Definición en términos de la curvatura (Teoría de Chern-Weil) en $H^{\\ast}_{DR}(M)$.\r\n  3) Ejemplo de fibrados de Líneas: $c_1(L)=\\frac{1}{2\\pi i}\\int_M \\Theta$ cuando $M$ es una superficie de Riemann y $\\mathbb{C}\\subset L\\stackrel{\\pi}{\\longrightarrow}M$ un fibrado de líneas.\r\n\r\n   \r\nEl curso se desarrollará de manera presencial. Con el objeto de reservar un espacio con el aforo adecuado, se ruega que confirmen a la dirección gir.ecsing@uva.es la intención de participar en el mismo.     ',9,'tasio@eio.uva.es','ECSING (Ecuaciones y Singularidades)','Aula 306, Aulario de la Facultad de Ciencias','2022-01-13',NULL,'10:00:00','Omegar Calvo Andrade','Centro de Investigación en matemáticas (CIMAT). Guanajuato (México).',1,'',NULL,NULL,'/uploads/carteles/2022/01/2022-01-13(Omegar-Calvo-Andrade)Seminario-766.pdf','',1,1),(767,'Introducción a la teoría de fibrados vectoriales y clases características',4,'Se trata de un curso que se desarrollará en tres sesiones, de 1h 30 min de duración cada una. Estudiaremos el problema de clasificación de fibrados vectoriales reales o complejos, con mayor énfasis en el caso complejo y holomorfo, como algunas aplicaciones a geometría y foliaciones holomorfas.\r\n  \r\nIII Sesión:\r\n\r\n  Aplicaciones:\r\n    Teorema de Índice normal de Camacho-Sad.\r\n\r\n    Aplicación a Foliaciones y distribuciones con singularidades.\r\n    \r\n    \r\nEl curso se desarrollará de manera presencial. Con el objeto de reservar un espacio con el aforo adecuado, se ruega que confirmen a la dirección gir.ecsing@uva.es la intención de participar en el mismo.     ',9,'tasio@eio.uva.es','ECSING (Ecuaciones y Singularidades)','Aula 306, Aulario de la Facultad de Ciencias','2022-01-14',NULL,'10:00:00','Omegar Calvo Andrade','Centro de Investigación en matemáticas (CIMAT). Guanajuato (México).',1,'',NULL,NULL,'/uploads/carteles/2022/01/2022-01-14(Omegar-Calvo-Andrade)Seminario-767.pdf','',1,1),(768,'Efecto Casimir en configuraciones interiores',4,'El efecto Casimir es una manifestación medible del vacío cuántico. Este fenómeno ha sido estudiado desde su predicción teórica en 1948 hasta nuestros días por su aplicación en diversas ramas de la física, desde gravitación y cosmología a nanofísica. En su versión inicial, este efecto se puede entender como la atracción de dos placas neutras plano-paralelas debido a las fluctuaciones cuánticas del vacío. A lo largo de los años se han ido estudiando casos más complejos, hallándose configuraciones concretas en las que la fuerza también puede ser repulsiva. \r\n\r\nEn este seminario presentaremos varios resultados sobre fuerzas repulsivas para el campo escalar y electromagnético. El objetivo es establecer la relación entre el signo de la presión de Casimir y diferentes condiciones geométricas y de contorno en configuración interiores. En particular, encontramos geometrías no triviales en las que el signo de la presión y la energía se comportan como en el caso plano-paralelo, el cual se ha verificado experimentalmente y aparece como un caso límite en nuestra configuración.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-01-12',NULL,'12:00:00','César Romaniega','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/01/2022-01-12(Cesar-Romaniega)Seminario-768.pdf','',1,1),(769,'Symmetry resolved entanglement: excited states in QFT',4,'En este seminario se estudiará el exceso de entropía de entrelazamiento que resulta de excitar un número finito de cuasi partículas por encima del estado fundamental en teorías cuánticas de campos integrables libres donde los campos cuánticos poseen una simetría interna U(1). \r\nEl cálculo de las entropías de Rényi será equivalente a estudiar la función de partición de una teoría construida a partir de n réplicas sin interacción de la teoría original. Dichas entropías se podrán escribir en términos de funciones de correlación del campo cuántico asociado a la simetría de permutación cíclica de las copias. Se usará el programa Bootstrap para el cálculo de las funciones de correlación',9,'tasio@eio.uva.es','MahtPhys','Sala de Grados I, Facultad de Ciencias','2022-01-20',NULL,'13:00:00','Lucía Santamaría','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/01/2022-01-20(Lucia-Santamaria)Seminario-769.pdf','',1,1),(770,'Seminario Iberoamericano de Matemáticas',4,'Se celebra en las Casas del Tratado (Tordesillas), la sesión 115 del Seminario Iberoamericano de Matemáticas, el 20 de enero de 2022, con el siguiente programa:\r\n\r\n10:00-11:00 José Ignacio Royo (UPV-EHU): Hard Lefschetz Property for Isometric Flows (Joint work with M.Saralegi-Aranguren & R.Wolak).\r\n\r\n11:00-11:30 Café\r\n\r\n11:30-12:30 Helena Reis (U. Porto): Meromorphic PSL(2,C)-actions and projective structures on Riemann surfaces. \r\n\r\n12:30-13:30 Fernando Alcalde (USC): Dinámica del flujo horocíclico en fibrados proyectivos: de la topología a la medida.\r\n\r\n13:30-16:30 Comida.\r\n\r\n16:30-17:00 Sergio Herrero Villa (USC): Dinámica en curvatura negativa sobre superficies geométricamente infinitas\r\n\r\n17:00-17:30 Ignacio Miguel Cantero (UVa): Optimal flat functions in Carleman-Roumieu ultraholomorphic classes in sectors.\r\n\r\n17:30-18:00 Café.\r\n\r\n18:00-18:30 María Martín Vega (UVa): Sobre el problema de Dulac de finitud de ciclos límite en dimensión 3\r\n\r\n18:30-19:00 David Senovilla Sanz (UNICAN): Bases estándar del módulo de diferenciales de un gérmen de curva plana irreducible y sus propiedades geométricas.\r\n\r\nLas sesiones podrán también seguirse a través de webex en el enlace:  https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m35c34e1888ffdd531266e205a45f4149',9,'tasio@eio.uva.es','ECSING (Ecuaciones y Singularidades) - AFA (Análisis Funcional Aplicado).','Casas del Tratado (Tordesillas, Valladolid).','2022-01-20',NULL,'10:00:00','Sesión 115','',1,'',NULL,'act1812022_SEMINARIO IBEROAMERICANO DE MATEMÁTICAS 115.pdf','/uploads/carteles/2022/01/2022-01-20(Sesion-115)Seminario-770.pdf','',1,1),(771,'Limit spectral distribution for non-degenerate hypersurface singularities',4,'The spectrum of an isolated hypersurface singularity is an important discrete invariant formed by $\\mu$ rational numbers, where $\\mu$ is the Milnor number of the hypersurface singularity. Despite knowing the interval where these rational numbers live, knowing their distribution throughout that interval is a challenge. In 1981, K. Saito asked if the asymptotic distribution of the spectral numbers of an isolated hypersurface singularity \"tends\" to the asymptotic distribution of the spectral values of an isolated quasihomogeneous singularity.  \r\n\r\nIn the first part of this talk, I will recall Saito\'s approach to the distribution of the spectral numbers and its relation with other conjectures in singularity theory, such as Durfee conjecture. In the second part, we will move to the irreducible plane curve case in order to compare the limit distribution with the real distribution of spectral values; as a consequence, we find that the log canonical threshold is strictly bounded below by the doubled inverse of the Milnor number. Finally, we will move to Newton non-degenerate singularities and we will show that in this case we can establish Saito\'s limit distribution in a natural way. \r\n\r\nThis is a joint work with M. Schulze.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA.','2022-02-11',NULL,'12:00:00','Patricio Almirón Cuadros','Universidad Complutense de Madrid',1,'',NULL,NULL,'/uploads/carteles/2022/02/2022-02-11(Patricio-Almiron-Cuadros)Seminario-771.pdf','',1,1),(772,'El abrazo del escutoide',2,'Sin duda una de las razones más poderosas para insistir en la comunicación de las matemáticas al público general es, al menos para mí, la urgente necesidad de popularización de estas para, sobre todo, acabar con los prejuicios que, tradicionalmente,  se han tenido sobre ellas y que conducen,  inexorablemente,  a la ansiedad de los estudiantes desde las primeras etapas de la educación. Pero, dejando a un lado esta labor del investigador para la sociedad, la divulgación de las matemáticas también pone el trabajo de los investigadores en un escaparate para investigadores de otros ámbitos y puede conducir a la colaboración interdisciplinar. En esta charla les hablaré de cómo la divulgación de la geometría  me llevó, nos llevó, a descubrir una nueva forma geométrica mirando a las glándulas salivares de la mosca de la fruta.\r\n',9,'tasio@eio.uva.es','','Aula Magna, Aulario de la Facultad de Ciencias','2022-02-24',NULL,'17:00:00','Clara Grima','Universidad de Sevilla',1,'','act722022_ClaraGrima5.jpg',NULL,'/uploads/carteles/2022/02/2022-02-24(Clara-Grima)Ateneo-772.pdf','',1,1),(773,'El INE y la estadística en el nuevo ecosistema de datos',5,'Conferencia incluida en el ciclo “Estadística, Big Data y Ciencia de Datos”',9,'tasio@eio.uva.es','Departamento de Estadística e Investigación Operativa','Aula Magna. Aulario del Campus Miguel Delibes','2022-02-17',NULL,'12:00:00','Juan Manuel Rodríguez Poó','Presidente del Instituto Nacional de Estadística',1,'','act1622022_índice.jpeg',NULL,'/uploads/carteles/2022/02/2022-02-17(Juan-Manuel-Rodriguez-Poo)Conferencia-773.pdf','',1,1),(774,'Construcciones de códigos en la métrica sum-rank',4,'En la teoría de códigos, la métrica sum-rank extiende simultáneamente las métricas de Hamming y del rango. En esta charla, presentaremos varias construcciones de códigos Maximum Sum-Rank Distance (MSRD), es decir, óptimos para la métrica sum-rank. Cada uno de estos códigos MSRD alcanza el tamaño de cuerpo finito más pequeño conocido para un cierto conjunto de parámetros, en todos los casos polinómicos en la longitud del código (en contraste con los códigos Maximum Rank Distance ó MRD, que siempre requieren cuerpos de tamaño exponencial en la longitud). Nuestras construcciones incluyen los códigos de Reed-Solomon linealizados, que generalizan a su vez los códigos de Reed-Solomon y los de Gabidulin. Al final, presentaremos los códigos Sum-Rank BCH, una familia de códigos de subcuerpo de los códigos Reed-Solomon linealizados que generalizan los códigos BCH y admiten tamaños de cuerpo más pequeños a cambio de no ser óptimos.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA.','2022-02-25',NULL,'12:00:00','Umberto Martínez Peñas','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/02/2022-02-25(Umberto-Martinez-Penas)Seminario-774.pdf','',1,1),(775,'La revolución del telescopio espacial James Webb',4,'El nuevo telescopio de la NASA, el Telescopio Espacial James Webb (JWST de sus siglas en inglés), ha atraído la atención de todos los medios de comunicación desde su lanzamiento hace un mes hasta la llegada a su órbita final hace unos días. En este seminario explicaremos  por qué va a suponer una revolución en el conocimiento humano, y cómo llevará a cabo sus programas \"estelares\", el estudio de huellas de vida en planetas extrasolares y la búsqueda de la primera generación de estrellas y galaxias del Universo. Con un carácter divulgativo, pero dirigido a universitarios, detallaremos cómo la UVa está envuelta en los proyectos de primera ciencia (cartografiado de galaxias CEERS) y la serie de TFGs, TFMs y artículos científicos que pueden salir de nuestra participación en esta misión espacial.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-02-24',NULL,'13:00:00','Fernando Buitrago','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/02/2022-02-24(Fernando-Buitrago)Seminario-775.pdf','',1,1),(776,'Sobre una desigualdad de polinomios',5,'La desigualdad de Bombieri es una desigualdad clásica de teoría de números. Compara la norma de un producto de polinomios con el producto de las normas de los mismos. Establecida por Beauzamy, Bombieri, Enflo y Montgomery en 1990, los autores probaron que es ajustada (Sharp) para el producto de dos polinomios. Durante 30 años no se ha producido ningún resultado mejor para el producto de cualquier otro número de polinomios.\r\n\r\nEn esta charla presentaremos una nueva desigualdad \"a la Bombieri\" para cualquier número de polinomios y demostraremos que es óptima siempre que los polinomios sean monomios. Las técnicas utilizadas distan mucho de las de la desigualdad original y utilizan herramientas de cálculo numérico y teoría del potencial.',9,'tasio@eio.uva.es','','Sala de Grados II, Facultad de Ciencias','2022-03-17',NULL,'17:00:00','Ujué Etayo','Universidad de Cantabria',1,'','act832022_Ujue-Etayo.jpg',NULL,'/uploads/carteles/2022/03/2022-03-17(Ujue-Etayo)Conferencia-776.pdf','',1,1),(777,'Estructuras Aleatorias Discretas',2,'Uno de los temas de actualidad en combinatoria es el estudio de estructuras discretas dotadas de una distribución de probabilidad, donde interesa conocer cuáles son las  propiedades típicas de  objetos aleatorios grandes. Por ejemplo, cuál es la altura de un árbol aleatorio cuando el tamaño tiende a infinito, o bien en cuántos ciclos descompone una permutación aleatoria.  En esta charla daremos una panorámica del tema a partir de ejemplos concretos,  poniendo el énfasis en  la interacción entre la combinatoria, la probabilidad y el análisis complejo. ',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2022-03-31',NULL,'17:00:00','Marc Noy','Universitat Politècnica de Catalunya',1,'','act832022_MarcNoy.png',NULL,'/uploads/carteles/2022/03/2022-03-31(Marc-Noy)Ateneo-777.pdf','',1,1),(778,'A path towards classifying rate-induced tipping as a non-autonomous bifurcation',5,'Critical Transitions are sudden changes in the dynamics of complex sistems, often with catastrophic consequences. There are several mechanism leading to a critical transition and we focus on those caused by the rate of a time-dependent drift of parameters  (which are usually fixed or at most varied adabatically), so-called rate-induced tipping.\r\nParticularly, in the case of a rate-induced tipping, a system evolves in time into another with posibly same topological properties of stability. However, depending on the rate at which such transition takes place , a local attractor of the past system  can fall to track  the corresponding  local attractor of the future system. This encompasses various real scenarios, for example in ecology, climate, biology and quantum mechanics. ',9,'tasio@eio.uva.es','GIR Sistemas Dinámicos','E.I. I. Edificio Induva, Aula 02','2022-03-16',NULL,'12:00:00','Iacopo Longo','Universidad Tecnológica de Munich',1,'',NULL,NULL,'/uploads/carteles/2022/03/2022-03-16(Iacopo-Longo)Conferencia-778.pdf','',1,1),(779,'Series de Laurent, Series de Poincaré, y aplicaciones combinatorias.',4,'Se revisarán las propiedades y la estructura algebraica de las series de Laurent en varias variables, así como algunas aplicaciones combinatorias. Se focalizará en el cálculo algebraico de puntos reticulares y en la reciente teoría de series de Poincaré de matroides obtenida en colaboración con R. Podestá e inspirada en la teoría de series de Poincaré de las singularidades desarrollada en colaboración con F. Delgado y S. M. Gusein-Zade.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2022-04-01',NULL,'12:00:00','Antonio Campillo','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/04/2022-04-01(Antonio-Campillo)Seminario-779.pdf','',1,1),(780,'Dinámica No Lineal, Teoría del Caos y Sistemas Complejos: Una perspectiva histórica',5,'La noción de dinámica ha evolucionado con el tiempo. Ahora cuando hablamos de dinámica, no solo entendemos el movimiento de los cuerpos celestes y los sistemas mecánicos sólidos, sino cualquier cambio con respecto al tiempo de una o varias variables. Desde ese punto de vista podemos encontrar dinámica por todas partes, en cualquier campo de la ciencia. De este modo, ahora se tiene una visión más general, donde se pueden incluir los movimientos de la bolsa y las variables económicas, el cambio de la concentración de substancias en las reacciones químicas, cambios en las variables fisiológicas en biología y medicina, el movimiento de los potenciales de acción de las neuronas, etc,...aportando una visión de naturaleza más interdisciplinar.\r\nLas diferentes interacciones entre las partes que constituyen un sistema físico y sus correspondientes mecanismos de retroalimentación, constituyen una fuente de no linealidad y complejidad, que añadido a la dependencia sensible a las condiciones iniciales, característico del comportamiento caótico, conllevan un cambio de perspectiva de los sistemas dinámicos con importantes consecuencias en la comprensión de la ciencia.\r\nEn esta conferencia se dará una perspectiva histórica de la Dinámica No Lineal, la Teoría del Caos y los Sistemas Complejos, donde se incluyen algunas de las diferentes fuentes que han contribuido a la construcción de la disciplina tal y como la conocemos a día de hoy. Entre ellas, el problema de los tres cuerpos en la mecánica celeste, la turbulencia en la dinámica de fluidos, la irreversibilidad y los fundamentos de la física estadística y la ecuación logística y la dinámica de poblaciones en biología. ',9,'tasio@eio.uva.es','MathPhys','Aula Magna','2022-04-28',NULL,'12:00:00','Miguel A. F. Sanjuán','Universidad Rey Juan Carlos',1,'','act1942022_Untitled.jpg',NULL,'/uploads/carteles/2022/04/2022-04-28(Miguel-A.-F.-Sanjuan)Conferencia-780.pdf','',1,1),(781,'Métodos Iterativos para problemas no lineales: de Newton a nuestros días.',2,'Numerosos problemas en ciencias e ingeniería requieren de la solución de problemas no lineales en el campo escalar, vectorial o matricial. En general, este tipo de problemas no tiene solución exacta. Por ello, hay que recurrir a procesos iterativos para obtener una estimación de la solución. \r\nAunque en la antigüedad existían algunos métodos de tipo iterativo, es el esquema de Newton el inicio de lo que consideramos como método iterativo. Es ampliamente utilizado para la resolución de muchos problemas aplicados, pero también se ha estudiado su funcionamiento desde diferentes puntos de vista: su convergencia semilocal, local o global en espacios de Banach, su comportamiento dinámico, su eficiencia computacional, etc. \r\nGracias al enorme desarrollo de la computación en los últimos años, muchos investigadores han diseñado numerosos métodos iterativos tratando de mejorar el esquema de Newton en cualquiera de sus aspectos: convergencia, estabilidad, eficiencia, ... En esta conferencia, damos una visión general de cómo ha evolucionado la investigación en este área y cuáles son los retos futuros. \r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2022-04-28',NULL,'17:00:00','Juan Torregrosa','Universidad Politécnica de Valencia',1,'','act2542022_JuanTorregrossa.png',NULL,'/uploads/carteles/2022/04/2022-04-28(Juan-Torregrosa)Ateneo-781.pdf','',1,1),(782,'Un estudio de las matrices tridiagonales k-periódicas',4,'Dado un anillo conmutativo unitario $K$, una matriz $A\\in\\text{Mat}_n(K)$ es tridiagonal $k$-Toeplitz si es tridiagonal y los elementos tanto de la diagonal principal como de las adyacentes son secuencias periódicas de periodo $k$; es pues de la forma\r\n$$A=\\begin{pmatrix}\r\na_1 & b_1 &&&&& \\\\\r\nc_1 & \\ddots & \\ddots &&&& \\\\\r\n&\\ddots& a_k & b_k &&& \\\\\r\n&& c_k & a_1 & b_1 && \\\\\r\n&&& c_1 & \\ddots &\\ddots & \\\\\r\n&&&&\\ddots& \\ddots & \\ddots \\\\\r\n\\end{pmatrix}.$$\r\nLas matrices tridiagonales aparecen con frecuencia en muchas áreas de las matemáticas puras y aplicadas; las matrices tridiagonales $k$-Toeplitz surgen en aquellos contextos en los que se asume cierta periodicidad del problema o sistema físico estudiado. Por tanto, los autovalores o la inversa de la matriz asociada pueden invocarse para resolver estos problemas. Usando álgebra lineal y álgebra combinatoria elementales, mostraremos cómo conseguir fórmulas para el determinante, el polinomio característico, el cálculo de autovectores, y los elementos de la inversa de una matriz tridiagonal $k$-Toeplitz sobre cualquier anillo conmutativo unitario, calcularemos la eficiencia de los algoritmos basados en dichas fórmulas, y los compararemos con los resultados existentes para los complejos en la literatura.\r\n\r\nEsta charla está basada en un trabajo conjunto con Helena Albuquerque (Centre for Mathematics of the University of Coimbra (Portugal)).',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2022-04-29',NULL,'12:00:00','Jose Brox','Centre for Mathematics of the University of Coimbra (Portugal)',1,'',NULL,NULL,'/uploads/carteles/2022/04/2022-04-29(Jose-Brox)Seminario-782.pdf','',1,1),(783,'Introduction to Tropical Geometry',11,'Tropical geometry is a combinatorial shadow of algebraic geometry, in which algebraic varieties are replaced by piecewise linear objects that retain core information about the original varieties. This allows techniques from combinatorics, including polyhedral geometry, to be brought to bear on problems from algebraic geometry, and has also allowed new applications of these techniques outside algebraic geometry, and also outside mathematics. This minicourse will give a basic introduction, with minimal prerequisites, to this exciting area.',9,'tasio@eio.uva.es','','Aulario de la Facultad de Ciencias','2022-05-23','2022-05-27','00:00:00','Diane Maclagan','University of Warwick',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-23(Diane-Maclagan)Curso-de-Doctorado-783.pdf','',0,0),(784,'Introduction to tropical ideals',11,'Tropical ideals are algebro-combinatorial objects introduced with the aim of giving tropical geometry a solid algebraic foundation. These ideals over the semiring of tropical polynomials have a rich structure dictated by a sequence of ‘compatible’ matroids, and satisfy many desirable properties. This minicourse will give a basic introduction to tropical ideals, discuss some of their main properties, and point out some of the main open questions in this direction.',9,'tasio@eio.uva.es','','Aulario de la Facultad de Ciencias','2022-05-23','2022-05-27','00:00:00','Felipe Rincón','Queen Mary University of London.',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-23(Felipe-Rincon)Curso-de-Doctorado-784.pdf','',0,0),(785,'Introduction to tropical curve counting',11,'The main goal of this minicourse is to introduce students to enumerative applications of tropical geometry. Tropical geometry is a combinatorialization of ordinary geometry. By either doing algebraic geometry over the tropical semi-field or over fields with a valuation, one may associate piecewise linear objects to ordinary algebraic varieties. Remarkably such highly degenerate objects retain a lot of geometric information about the original algebraic varieties. For example, the notion of dimension is preserved: thus to an algebraic curve is associated a graph. Further, the genus of the curve generically is equal to the genus of the graph. In the last twenty-some years many groups of researchers have explored these connections, providing a wealth of correspondence theorems: statements on how to recover classical information from its tropical counterpart. In this minicourse we will focus in particular on a celebrated result of Mikhalkin, which shows that the count of rational tropical plane curves of degree d through 3d − 1 points in general position equals the classical count. Time permitting we will show some further applications of tropical techniques to Hurwitz theory, the count of ramified covers of Riemann Surfaces.',9,'tasio@eio.uva.es','','Aulario de la Facultad de Ciencias','2022-05-23','2022-05-27','00:00:00','Renzo Cavalieri','Colorado State University',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-23(Renzo-Cavalieri)No-se-ha-especificado-ningun-tipo-785.pdf','',0,0),(786,'Tropical approach to singular points and its connections to Nagata’s conjecture and linear codes',11,'Tropical geometry provides a tool to capture the influence of a singular point of a curve\r\non a subdivision of the Newton polygon of this curve. To visualise this influence we will study some necessary facts about matroids and polyhedral geometry, so the students are advised to read somewhere the definition of a matroid and look at the main examples in advance. Then we discuss applications of the above ideas for Nagata’s conjecture and linear codes.\r\n	\r\n',9,'tasio@eio.uva.es','','Aulario de la Facultad de Ciencias','2022-05-23','2022-05-27','00:00:00','Nikita Kalinin','Saint Petersburg University and National Research University Higher School of Economics (HSE)',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-23(Nikita-Kalinin)Curso-de-Doctorado-786.pdf','',0,0),(787,'Response solutions in degenerate, quasi-periodically forced nonlinear oscillators',5,'For a quasi-periodically forced differential equation, response solutions are quasi-periodic ones whose frequency vector coincides with that of the forcing function and they are known to play a fundamental role in the harmonic and synchronizing behaviors of quasi-periodically forced oscillators. These solutions are well-understood in quasi-periodically perturbed nonlinear oscillators either in the presence of large damping or in the non-degenerate cases with small or free damping. This talk will present some recent results on the existence of responsive solutions in degenerate, quasi-periodically forced nonlinear oscillators with small or free damping.',9,'tasio@eio.uva.es','G.I.R. Sistemas Dinámicos','Aula 34. Edificio Induva.  E.I.I.','2022-05-05',NULL,'11:00:00','Yingfei Yi','University of Alberta',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-05(Yingfei-Yi)Conferencia-787.pdf','',1,1),(788,'Exploring the solar system: searching for the origins of life',4,'Is there life beyond Earth? This has been a question haunting humans for millenia. Nowadays, the advances in technology help search for the answer to this question and many others. In this talk we will explain how the in situ exploration of Mars and the use of spectroscopy is used to investigate the existence of present or past life in Mars, and the implications to life on Earth. The participation of the Universidad de Valladolid in several missions to the red planet will be discussed, showing how we contribute to this huge scientific project.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-05-12',NULL,'12:00:00','Guillermo López-Reyes','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-12(Guillermo-Lopez-Reyes)Seminario-788.pdf','',1,1),(789,'Heterogeneidad Celular en Cáncer e Inmunología:  Modelos Matemáticos y Aplicaciones Biomédicas',2,'La heterogeneidad celular es una característica que presentan los organismos multicelulares. Aunque tales poblaciones celulares, en un mismo organismo, posean un genoma idéntico (o casi idéntico), su funcionalidad y comportamiento se manifestará de manera muy distinta, tanto en homeostasis como en procesos patológicos. En este seminario se presentarán un conjunto de metodologías, basadas en modelos matemáticos con ecuaciones en derivadas parciales no locales y técnicas de análisis de reducción multidimensional, destinadas a caracterizar el comportamiento de poblaciones celulares heterogéneas, tanto cancerígenas como del sistema inmune. Nos centraremos entonces en mostrar aplicaciones biomédicas de estas herramientas en las llamadas leyes de escala del metabolismo tumoral y en inflamación patogénica.',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2022-05-19',NULL,'17:00:00','Gabriel Fernández Calvo','Universidad de Castilla-La Mancha',1,'','act1652022_Fotografía_Gabriel Fernández.jpeg',NULL,'/uploads/carteles/2022/05/2022-05-19(Gabriel-Fernandez-Calvo)Ateneo-789.pdf','',1,1),(790,'Continuous dependency of mild solution (delay-PDEs) with respect to: initial data, coefficient and varying delay',4,'The seminar will cover the subject matter of continuous dependency of mild solutions of linear PDEs of parabolic type with time varying delay with respect to: initial data, parameters and delay jointly. The main equation is complemented with boundary conditions of Dirichlet, Neumann or Robin type. The seminar will present the sufficient assumptions on the initial condition, coefficients, and delay map that can be assumed to obtain continuous dependence in suitable topology of coefficient space. These results have application in mathematical ecology to model dependencies between species, especially species extinction.\r\n\r\n',9,'tasio@eio.uva.es','G.I.R. Sistemas Dinámicos','Aula 34,  edificio Induva de  la EII','2022-05-26',NULL,'11:00:00','Marek Kryspin','Wroclaw University of Science and Technology',1,'',NULL,NULL,'/uploads/carteles/2022/05/2022-05-26(Marek-Kryspin)Seminario-790.pdf','',1,1),(791,'Geometría en dimensión infinita. De la teoría de Einstein al diagnóstico por imagen.',2,'Hace treinta años obtuvimos una serie de resultados sobre la geometría de Riemann de ciertas variedades de dimensión infinita con el fin de entender mejor el significado de las ecuaciones de Einstein sobre la forma del universo. Actualmente esos resultados se utilizan para calcular distancias entre formas de objetos, que es esencial en el reconocimiento de imágenes. Uno de los objetivos de esta charla es trasmitir por medio de este ejemplo el significado de los modelos matemáticos y la razón por la que los resultados en matemáticas tienen una obsolescencia menor que los de otras disciplinas científicas.\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2022-06-23',NULL,'17:00:00','Olga Gil Medrano','Universitat de València',1,'','act1462022_IMG_1311.jpg',NULL,'/uploads/carteles/2022/06/2022-06-23(Olga-Gil-Medrano)Ateneo-791.pdf','',1,1),(792,'Private Information Retrieval Schemes Using Cyclic Codes ',9,'Many protocols protect the user and server from third parties while accessing the data. Nevertheless, no security measure protects the user from the server. As a result of this demand, Private Information Retrieval (PIR) protocols emerged. A Private Information Retrieval (PIR) scheme allows users to retrieve data from a database without disclosing to the server information about the identity of the data retrieved. We consider in this work that data is stored in a Distributed Storage System (DSS) since, if data is stored in a single database, one can only guarantee information-theoretic privacy by downloading the full database, which has a high communication cost.\r\n\r\nThe use of a GRS, or an MDS code, requires working over a big base field. In order to address this issue, since binary base fields are desirable for practical implementations, in this work, we propose to use cyclic codes to construct PIR schemes. In 2018, R. Freij-Hollanti et al.  proposed the scheme which considers a storage and retrieval code with a transitive group and provides binary PIR schemes with the highest possible rate. Reed-Muller codes were considered in that work, cyclic codes are considered in this work since they have a transitive group and can be defined over a binary field as well.\r\n\r\nIn this work, we provide a family of optimal binary PIR schemes. Our PIR schemes have the advantage, with respect to PIR schemes from MDS codes, that they can be defined over a binary field. Moreover, they provide a larger constellation of parameters than the binary PIR schemes using Reed-Muller codes and they even outperform them in some cases.\r\n\r\nThis talk is based on joint work with Edgar Martínez-Moro and Diego Ruano.\r\n\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'11:30:00','Seyma Bodur','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Seyma-Bodur)Seminario-de-Doctorado-792.pdf','',0,0),(793,'Métodos racionales sin reducción de orden',9,'Los métodos racionales, entre los que destacan de forma particular los métodos Runge-Kutta, son unas de las familias de métodos numéricos para ecuaciones diferenciales más eficientes y conocidas. Sin embargo, al utilizarlos en la resolución de ecuaciones en derivadas parciales asociadas a problemas de evolución el orden de convergencia típico del método se ve reducido, pudiéndose mostrar incluso órdenes de convergencia fraccionarios. La investigación que realizamos pretende encuadrar problemas diferenciales no homogéneos o con condiciones de contorno no triviales en un marco abstracto general en el que, a costa de la simplicidad en la formulación, se evite la reducción del orden. Con este fin, durante los primeros meses de la investigación se han estudiado cuestiones relacionadas como la interpolación en espacios de Banach; la teoría de semigrupos de operadores y el cálculo funcional de operadores no acotados; así como otros resultados clásicos propios del análisis numérico y las ecuaciones en derivadas parciales.',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'12:00:00','Carlos Arranz','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Carlos-Arranz)Seminario-de-Doctorado-793.pdf','',0,0),(794,'Saturation and vanishing ideals',9,'We consider an homogeneous ideal $I$ in the polynomial ring $S=\\mathbb{F}_q[x_1,\\dots,$ $x_m]$ over a finite field $\\mathbb{F}_q$ and the finite set of projective rational points $\\mathbb{X}$ that it defines in the projective space $\\mathbb{P}^{m-1}$. We concern ourselves with the problem of computing the vanishing ideal $I(\\mathbb{X})$. This is usually done by adding the equations of the projective space $I(\\mathbb{P}^{m-1})$ to $I$ and computing the radical. We give an alternative and more efficient way using the saturation with respect to the homogeneous maximal ideal.',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'14:00:00','Rodrigo San José','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Rodrigo-San-Jose)Seminario-de-Doctorado-794.pdf','',0,0),(795,'Combinatorics of sequences of blow ups through an intersection theory view',9,'Through this talk I will review the principal results of my thesis. The main object of our research is the study of the exceptional divisor $E$ living in the sky $Z$ of a sequence of blow ups at smooth centers. More precisely, we are interested in recovering the sequence modulo an equivalence relation by means of the information contained in the Chow ring of the sky, $A(Z)$, and in particular by using the numerical data given by the intersection form on divisors with exceptional support $\\mathcal{I}_{E,Z}$.',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'12:30:00','Daniel Camazón Portela','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Daniel-Camazon-Portela)Seminario-de-Doctorado-795.pdf','',0,0),(796,'$D$-concave nonautonomous scalar bifurcation theory and applications in critical transitions',9,'We present some one-parametric bifurcation problems of dissipative nonautonomous scalar ordinary differential equations with concave derivative (d-concave). Saddle-node, transcritical and pitchfork bifurcation points of minimal sets are found in the skewproduct formalism for this kind of differential equations. Critical transitions are sudden and abrupt changes in the state of a complex system which occur on account of small variations on external parameters. The described bifurcations provide adequate critical transitions models in complex systems.\r\n\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'13:00:00','Jesús Dueñas Pamplona','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Jesus-Duenas-Pamplona)Seminario-de-Doctorado-796.pdf','',0,0),(797,'Optimal flat functions and surjectivity of the Borel map in Carleman-Roumieu ultraholomorphic classes in sectors',9,'A general procedure is presented in order to obtain linear continuous extension operators, right inverses of the Borel map, whenever optimal flat functions are available in Carleman-Roumieu ultraholomorphic classes, defined on sectors and in terms of regular weight sequences in the sense of Dyn’kin. For a family of regular sequences, including the well-known q-Gevrey case, we construct such optimal flat functions in arbitrary sectors of the Riemann surface of the logarithm. \r\n\r\nOnly very recently we have been able to construct optimal flat functions in Carleman-Roumieu ultraholomorphic classes for general weight sequences $\\mathbb{M}$ (not even regular) and in sectors whose opening is limited in terms of the index $\\gamma(\\mathbb{M})$ of V. Thilliez. This step forward is due to the equivalence between the classical conditions $ (M3) $ of H. Komatsu and a condition appearing in a work of M. Langenbruch which has been recovered in a preprint of D. N. Nenning, A. Rainer and G. Schindl.\r\n\r\nJoint work with J. Jiménez-Garrido, J. Sanz and G.~Schindl.',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'13:30:00','Ignacio Miguel Cantero','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Ignacio-Miguel-Cantero)Seminario-de-Doctorado-797.pdf','',0,0),(798,'Jornada de Doctorado IMUVa 2022',13,'<p>Jornada dedicada a presentar la investigación de los estudiantes del Programa de Doctorado en Matemáticas del IMUVa, con el siguiente programa:</p><div><h4><b>11:30-12:00 Seyma Bodur</b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/792\">Private Information Retrieval Schemes Using Cyclic Codes</a></h4></div><div><h4><b>12:00-12:30 Carlos Arranz Simón</b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/793\">Métodos racionales sin reducción de orden</a></h4></div><div><h4><b>12:30-13:00 Daniel Camazón </b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/795\">Combinatorics of sequences of blow ups through an intersection theory view</a></h4></div><div><h4><b>13:00-13:30 Jesús Dueñas Pamplona</b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/796\">D-concave nonautonomous scalar bifurcation theory and applications in critical transitions</a></h4></div><div><h4><b>13:30-14:00 Ignacio Miguel Cantero</b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/797\">Optimal flat functions and surjectivity of the Borel map in Carleman-Roumieu ...</a></h4></div><div><h4><b>14:00-14:30 Rodrigo San José</b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/794\">Saturation and vanishing ideals</a></h4></div>Se puede asistir también a los seminarios de forma virtual a través del enlace <br><p><a href=\"https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m40297f51a22c48f7da5d589aeb4206ce\">https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=m40297f51a22c48f7da5d589aeb4206ce</a></p><br><p><br><br></p><div><br><br></div><p><br></p><p> </p>',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-06-30',NULL,'11:30:00','Programa de Doctorado en Matemáticas','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/06/2022-06-30(Programa-de-Doctorado-en-Matematicas)Doctorado-798.pdf','',1,1),(799,'El problema de Dulac en $\\mathbb{R}^3$ y la distribución de ciclos para perturbaciones de centros lineales no degenerados',9,'El problema de Dulac se puede entender como una versión local del problema 16 de Hilbert. Nos dice que un campo de vectores analítico en dimensión 2 define un número finito de ciclos límite en un entorno de la singularidad. Y. Ilyashenko y J. Ecalle dieron una respuesta positiva a este problema en los años 1991-1992.\r\nExtendemos el problema de Dulac a campos de vectores analíticos en $\\mathbb{R}^3$. Decimos que un campo de vectores cumple la propiedad de Dulac si los ciclos se organizan de una de las formas siguientes:\r\n\r\n- Existe un entorno de la singularidad donde no hay ciclos.\r\n	\r\n- Existe un entorno de la singularidad tal que todas los ciclos están contenidos en un número finito de superficies topológicas invariantes con configuración de centro.\r\n\r\nAmbas situaciones implican la finitud local de ciclos límite. En esta charla, probamos el problema de Dulac para perturbaciones de centros lineales no degenerados con singularidad aislada.',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-07-08',NULL,'10:00:00','María Martín Vega','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/07/2022-07-08(Maria-Martin-Vega)Seminario-de-Doctorado-799.pdf','',0,0),(800,'Algebraic variety estimation. Applications to electrical network estimation problems.',9,'Given a data set of points in a real algebraic variety $V$ with some error, we seek to determine $V$. The most common methods for finding polynomials generating an ideal $I$ such that $V=V(I)$ look for polynomials of minimum variance using Vandermonde matrices, which are ill-conditioned. We discuss the advantages and drawbacks, and the relation with polynomial optimization of the less explored alternative of looking for a variety such that the sum of squared Euclidean distances form each point to it is minimum.  \r\n\r\nElectrical networks are a field in which arise interesting variety estimation problems, in which each variety is associated to a graph, so techniques from graph theory can help to estimate the variety. In previous work, we developed an algorithm to simultaneously estimate the topology and parameters of an electric network from voltage and power data measured at each node using spectral graph theory along with random walks on graphs to improve the numerical estimation. In a joint work with Alberto González, we present advances in the algorithm about its stopping criterion and the consistency of the estimations.  \r\n\r\nAnother related estimation problem is Electrical Impedance Tomography, in which we estimate the parameters of an electric network only from measurements in the boundary nodes. This problem is severely ill-posed. We show experimental examples in which a formulation of EIT as a polynomial optimization problem with a penalty function improve the numerical estimations.  ',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-07-08',NULL,'10:30:00','Álvaro Samperio Valdivieso','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/07/2022-07-08(Alvaro-Samperio-Valdivieso)Seminario-de-Doctorado-800.pdf','',0,0),(801,'Nonparametric Multiple-Output Center-Outward Quantile Regression',9,'This talk addresses the problem of non-parametric multiple-output quantile regression based on the novel concept of measure-transportation-based multivariate center-outward quantiles introduced in Chernozhukov et al. (2017) and Hallin et al. (2021). The conditional quantile regions and contours are obtained via the conditional center-outward quantile mapping. A new cyclically monotone interpolation, with non-necessarily constant weights, is proposed to define their empirical versions. This method is completely non-parametric and produces interpretable empirical regions/contours which converge in probability to their population counterparts. The presentation includes some real and simulated examples, demonstrating the power of the method as a data-analytic tool, and its ability to catch heteroskedasticity and non-linear trends.\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-07-08',NULL,'11:00:00','Alberto González Sanz','Université Paul Sabatier de Toulouse/Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/07/2022-07-08(Alberto-Gonzalez-Sanz)Seminario-de-Doctorado-801.pdf','',0,0),(802,'Jornada de Doctorado IMUVa 2022 (2ª parte)',13,'<p>Continuación de la jornada dedicada a presentar la investigación de los estudiantes del Programa de Doctorado en Matemáticas del IMUVa, con el siguiente programa:</p><div><h4><b>10:30-11:00 María Martín Vega<br></b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/799\">El problema de Dulac en R3 y la distribución de ciclos para perturbaciones de centros lineales no degenerados</a></h4></div><div><h4><b>11:00-11:30 Álvaro Samperio Valdivieso<br></b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/800\">Algebraic variety estimation. Applications to electrical network estimation problems</a></h4></div><div><h4><b>11:30-12:00 Alberto González Sanz<br></b></h4></div><div><h4>                    <a href=\"http://www.imuva.uva.es/es/actividad/801\">Nonparametric Multiple-Output Center-Outward Quantile Regression</a></h4><p><br></p></div>Se puede asistir también a los seminarios de forma virtual a través del enlace <br><div><font face=\"arial, sans-serif\"><a href=\"https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=mebcf246dc65a839eb4f913dee0757358\">https://universidaddevalladolid.webex.com/universidaddevalladolid/j.php?MTID=mebcf246dc65a839eb4f913dee0757358</a><br></font></div><div><font face=\"arial, sans-serif\"><br><br></font></div><p></p><br><p><br><br></p><div><br><br></div><p><br></p><p> </p>',9,'tasio@eio.uva.es','','Seminario del IMUVa, Edificio LUCIA','2022-07-08',NULL,'10:30:00','Programa de Doctorado en Matemáticas','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/07/2022-07-08(Programa-de-Doctorado-en-Matematicas)Doctorado-802.pdf','',1,1),(803,'Almost Gorenstein rings and further generalizations: the one-dimensional case.',4,'I will first present the class of almost Gorenstein rings, focusing on the one-dimensional case. This notion was introduced by Barucci and Froberg for algebroid curves and it has been recently generalized (by Goto and others) and widely studied for more general one-dimensional rings and, successively, in any dimension. \r\n\r\nIn the one-dimensional case, other possible generalizations of Gorenstein and almost Gorenstein has been proposed; these classes are close to Gorenstein and almost Gorenstein rings under different aspects. I will describe one of this new classes, whose definition is motivated by the relationships between the properties of a local one-dimensional ring (R,m) and those of the R-algebra m:m.',9,'tasio@eio.uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2022-09-30',NULL,'12:00:00','Marco D\'Anna','University of Catania',1,'',NULL,NULL,'/uploads/carteles/2022/09/2022-09-30(Marco-D\'Anna)Seminario-803.pdf','',1,1),(804,'(SOME) LATEST CONSTRAINTS ON MODIFIED GRAVITIES FROM LARGE-SCALE STRUCTURES',4,'We use the growth of latest large-scale structure data to constrain the both effective field theory of dark energy and scalar-tensor paradigmatic models. Considering as cases study Horndeski theories with the speed of gravitational waves equal to that of light and the popular Hu-Sawicki f(R) model, we show how constraints on the free parameters and the large-scale structure phenomenological functions can be improved by two ingredients: firstly by complementing the set of redshift-space distortions data with the three recent measurements of the growth rate f and the amplitude of matter fluctuations sigma_8 from the VIPERS and SDSS collaborations; secondly by applying a local Solar-System bounds on the variation of the Newton’s constant. Such an analysis allowed us to conclude that: i)despite firmly restricting the predictions of weaker gravity, the inclusion of the Solar-System bounds do not prevent suppressed growth relative to the ΛCDM Concordance model at low redshifts; ii) the same bounds in conjunction with the large-scale structure data strongly restrict the redshift evolution of the gravitational slip parameter to be close to unity and the present value is constrained to one at the 10−3 level; iii) in the effective field theory framework, the large-scale structure data favour a fifth force contribution to the effective gravitational coupling at low redshifts and at more than one sigma at present time; and iv) the validity of the quasi-static vs. the subHubble approximation for f(R) theories is revisited carefully in order to establish model-parameters constraints. Finally, we will say a few words on recent constraintsobtained for theories with disformal coupling.',125,'diego.saez@uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-09-21',NULL,'13:00:00','Alvaro de la Cruz-Dombriz','Universidad de Salamanca',1,'',NULL,NULL,'/uploads/carteles/2022/09/2022-09-21(Alvaro-de-la-Cruz-Dombriz)Seminario-804.pdf','',0,0),(805,'The origin of the Milky Way disc with Gaia and large-scale surveys',4,'Understanding how galaxies form and evolve in the Universe is a key long-term goal of Astrophysics. In this regard our Galaxy provides unique insights because, due to its proximity, detailed galactic properties can be resolved that can unravel its formation history. For this reason, the international community have made large investments in observational resources to perform Galactic research during this and the following decades, like the Gaia mission and ground-based spectroscopic surveys like WEAVE and 4MOST, among others. The extraordinary wealth of data is facilitating and unprecedented leap forward to uncover the origin and evolution of our Galaxy with important implications for deciphering the physical processes governing galaxy evolution in general. In this talk I will present the last findings regarding the disc formation and the role that the Milky Way merger history played.\r\n\r\n',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-10-04',NULL,'13:15:00','Emma Fernández Alvar','Instituto de Astrofísica de Canarias',1,'',NULL,NULL,'/uploads/carteles/2022/10/2022-10-04(Emma-Fernandez-Alvar)Seminario-805.pdf','',1,1),(806,'Dark matter as a QCD effect in an Anti de Sitter geometry',4,'The ΛCDM standard model of cosmology involves two dark components of the universe, dark energy and dark matter. Whereas dark energy is usually associated with the (positive) cosmological constant Λ associated with a de Sitter geometry, we propose1 to explain dark matter as a pure QCD effect, namely a gluonic Bose Einstein condensate. This effect is due to the trace anomaly viewed as a Anti de Sitter positive curvature (~ negative cosmological constant) accompanying baryonic matter at the hadronization transition from the quark gluon plasma phase to the colorless hadronic phase. Our approach not only allows us to assume a ratio Dark/Visible equal to 11/2 but also provides gluons (and di-gluons, viewed as quasi-particles) with an extra mass of vibrational nature.  Such an interpretation would comfort the idea that, apart from the violation of the matter/antimatter symmetry satisfying the Sakharov’s conditions, the reconciliation of particle physics and cosmology needs not the recourse to any ad hoc fields, particles or hidden variables.\r\n',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-10-11',NULL,'13:00:00','Jean-Pierre Gazeau','Université Paris Cité',1,'',NULL,NULL,'/uploads/carteles/2022/10/2022-10-11(Jean-Pierre-Gazeau)Seminario-806.pdf','',1,1),(807,'On boundary value problems for the two dimensional magneto-hydrostatic equations',4,'Magneto-hydrostatics is relevant in a wide variety of problems in astrophysical plasmas describing coronal field structures and stellar winds as well as in the study of plasma confinement fusion. In this talk, we will give a brief introduction to those problems and discuss the solvability of different boundary value problems for the two dimensional magneto-hydrostatic equations. In particular, we will focus on a boundary value problem originally proposed by Grad and Rubin in the late 50’s. The idea towards the proof relies on a fixed point argument which combines the so-called transport method together with Hölder estimates for a class of non-convolution singular integral operators. Time permitting, we will also mention some related open problems.\r\n',9,'tasio@eio.uva.es','G.I.R. Modelización, Teoría y Análisis Numérico en Problemas de Optimización y Ecuaciones de Evolución','Sala de Grados II, Facultad de Ciencias','2022-11-17',NULL,'18:00:00','Diego Alonso Orán','Universidad de La Laguna',1,'',NULL,NULL,'/uploads/carteles/2022/11/2022-11-17(Diego-Alonso-Oran)Seminario-807.pdf','',1,1),(808,'New PDEs describing the onset of angiogenesis',4,'Angiogenesis is the process of creation of new blood vessel from the pre-existing vascular network. This process is of crucial importance in tumor growth. In this talk we will present some new results on a system of PDEs describing the onset of angiogenesis. Furthermore, we will introduce a family of new models together with some well-posedness results for these new equations.\r\n',9,'tasio@eio.uva.es','G.I.R. Modelización, Teoría y Análisis Numérico en Problemas de Optimización y Ecuaciones de Evolución','Sala de Grados II, Facultad de Ciencias','2022-11-17',NULL,'17:00:00','Rafael Granero Belinchón','Universidad de Cantabria',1,'',NULL,NULL,'/uploads/carteles/2022/11/2022-11-17(Rafael-Granero-Belinchon)Seminario-808.pdf','',1,1),(809,'Combinatoria de las singularidades de curvas planas',4,'Voy a explicar cómo asociar a cada germen reducido de curva plana un complejo simplicial de dimensión  2, llamado un lotus, que permite comparar geométricamente los distintos modos clásicos de codificar completamente el tipo combinatorio del germen por árboles decorados (árboles de Enriques, grafos duales de resoluciones encajadas, árboles de Eggers-Wall). Esta charla estará basada en un trabajo común con Evelia García Barroso y Pedro González Pérez, publicado como primer capítulo del \"Handbook of Geometry and Topology of Singularities\".',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2022-10-28',NULL,'12:00:00','Patrick Popescu-Pampu','Université de Lille (France)',1,'',NULL,NULL,'/uploads/carteles/2022/10/2022-10-28(Patrick-Popescu-Pampu)Seminario-809.pdf','',1,1),(810,'Some families of optimal $(r,\\delta)$-locally recoverable codes',4,'Locally recoverable codes arised to treat the repair problem for large scale distributed and cloud storage systems. This problem consists of recovering the information of a failing node from the others. A locally recoverable code with locality $r$, $C$, is an error-correcting code such that any position in $C$ can be recovered from at most $r$ other positions of $C$. An improvement are $(r,\\delta)$-locally recoverable codes, which are designed for simultaneous multiple device failures. They admit a Singleton-like bound, and optimal $(r,\\delta)$-locally recoverable codes are those achieving that bound.\r\n\r\nWe give several families of optimal $(r,\\delta)$-locally recoverable codes. Most of the constructions of these codes are new, and they are designed for repairing one position by accesing at most $r$ positions but tolerating other $\\delta-1$ erasures. These codes belong to a family of error-correcting codes which enlarges that of $J$-affine variety codes which also allow us to obtain $(r,\\delta)$-locally recoverable codes. These results were obtained jointly with C. Galindo and F. Hernando.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2022-11-04',NULL,'12:00:00','Helena Martín Cruz','Universitat Jaume I',1,'',NULL,NULL,'/uploads/carteles/2022/11/2022-11-04(Helena-Martin-Cruz)Seminario-810.pdf','',1,1),(811,'Factorization method extension and Symmetry determination',4,'Factorization methods have been applied to study one-dimensional systems. We are going to show how to generalize that method to analyze integrable systems regardless of their dimension. This is method considers the dimensional decomposition of integrable systems creating Ladder and Shift operators whose combined effect modify the values of the Casimir operators, that grant said decomposition, this operators allow us to study the systems symmetry. We are going to show the basis of this generalization exploring already studied systems such as the Harmonic Oscillator and Kepler-Coulomb, this allow us to compare the results obtained with this method. Since this operators are crafted considering Shift and Ladder properties, they can be used to define the states of the system in the quantum mechanics frame as well as Action-Angle coordinates in classical mechanics. Once we have shown the way of this model, we can consider more complex systems such as the Smorodinsky-Winternitz model.',9,'tasio@eio.uva.es','MathPhys','Sala de Seminarios, Departamento de Física Teórica, Atómica y Óptica','2022-10-26',NULL,'13:00:00','Sergio Salamanca','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/10/2022-10-26(Sergio-Salamanca)Seminario-811.pdf','',1,1),(813,'Bilayer graphene coherent states',4,'In this talk we will consider the interaction of electrons in bilayer graphene with a constant homogeneous magnetic field which is perpendicular to the bilayer surface. This system can be addressed through an alternative semi-classical approach, the so-called coherent states which were first proposed by Erwin Schrödinger in 1926 for the harmonic oscillator as the quantum states closest to their classical counterpart. Thus, the bilayer graphene coherent states (BGCS) will be derived as eigenstates of an appropriate annihilation operator with complex eigenvalue. Some physical quantities can be computed for these states, in particular in order to study the dynamics of the system the time evolution will be explored and the time-correlation function will be computed.',9,'tasio@eio.uva.es','MathPhys','Sala de Seminarios B-118, Departamento de Física Teórica, Atómica y Óptica','2022-11-03',NULL,'13:00:00','Dennis Itzel Martinez Moreno','Centro de Investigación y de Estudios Avanzados (Cinvestav) del IPN',1,'',NULL,NULL,'/uploads/carteles/2022/11/2022-11-03(Dennis-Itzel-Martinez-Moreno)Seminario-813.pdf','',1,1),(814,'Modelización de los tiempos de vida en dispositivos de un sólo uso',2,'Los dispositivos de un solo uso son aquellos que, como su nombre indica, sólo pueden usarse una vez antes de ser desechados o tener que ser reparados (el airbag del coche o un test de antígenos, por ejemplo). En los últimos años ha habido un creciente interés en su estudio desde un punto de vista estadístico. En esta charla explicaré como modelizar su tiempo de vida, repasando las dificultades ante las que nos podemos encontrar y dando algunas ideas para solucionarlas.\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2022-11-24',NULL,'17:00:00','Elena Castilla','Universidad Rey Juan Carlos',1,'','act7112022_iimage_Elena.jpg',NULL,'/uploads/carteles/2022/11/2022-11-24(Elena-Castilla)Ateneo-814.pdf','',1,1),(815,'On inclusion relations between weighted spaces of entire functions',4,'We characterize the inclusions of weighted classes of entire functions in terms of the defining weights resp. weight systems. First we treat weights defined in terms of a so-called associated weight function where the weight (system) is based on a given sequence. The abstract weight function case is then reduced to the weight sequence setting by using the so-called associated weight sequence. As an application of the main statements we characterize closedness under point-wise multiplication of these classes.',77,'jsanzg@am.uva.es','GIR AFA-ECSING','Seminario A121, 1ª planta de la Facultad de Ciencias','2022-11-18',NULL,'12:00:00','Gerhard Schindl','Universidad de Viena (Austria)',1,'',NULL,NULL,'/uploads/carteles/2022/11/2022-11-18(Gerhard-Schindl)Seminario-815.pdf','',1,1),(816,'Sleep medicine and biomedical engineering',5,'Insufficient or fragmented sleep has been identified as a public health epidemic. The most prevalent causes include chronic insomnia and obstructive sleep apnea (OSA), which affect almost a billion people. OSA is associated with increased risk of developing a rapidly expanding list of medical comorbidities such as hypertension, cardiac arrhythmias, ischemic heart disease, stroke, diabetes, learning and attention deficits, and depression and mental illness. Biomedical engineering can help in terms of diagnostic devices, analysis of recorded signals, and designing and improving therapeutic equipment as well. New wearables and telemedicine approaches are the latest topics of interest.\r\n\r\n\r\nNota: Esta es la conferencia inaugural en el Congreso Anual de la Sociedad Española de Ingeniería Biomédica (CASEIB 2022).',9,'tasio@eio.uva.es','GIR Ingeniería Biomédica','Aula Magna de la Facultad de Medicina','2022-11-23',NULL,'12:00:00','Thomas Penzel','Charité - Universitätsmedizin Berlin, Germany',1,'','act16112022_Prof_Penzel_07_klein-249x300.jpg',NULL,'/uploads/carteles/2022/11/2022-11-23(Thomas-Penzel)Conferencia-816.pdf','',1,1),(817,'Wobbling kinks in a two component scalar field theory: Interaction between shape modes.',4,'In this seminar we will talk about the simplest kink solution that arises in the MSTB model, a two component scalar field theory whose potential depends on a parameter. We will first study the spectrum of the first order kink fluctuation, which will allow us to find out that this kink possesses two discrete vibration modes (or shape modes) associated with separated vibrations in the first and second field components. Then, we will study how the kink behaves when we trigger the second field shape mode. For this purpose, two different perturbation theories will be used. We will find that the excitation of the second shape mode immediately triggers the discrete vibration eigenmode of the first field. In addition, we will find that, when we are away from the kink center, this physical system emits radiation at three different frequencies. We will also calculate the decay laws for both shape modes amplitudes. Additionally, we will be able to verify these results comparing them with the radiation spectra obtained by means of numerical simulations.',9,'tasio@eio.uva.es','MathPhys','Sala de Seminarios B-118, Departamento de Física Teórica, Atómica y Óptica','2022-12-01',NULL,'13:00:00','David Miguélez','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2022/12/2022-12-01(David-Miguelez)Seminario-817.pdf','',1,1),(818,'Directly imaging cold and temperate exoplanets with the next generation of space telescopes',4,'More than five thousand extrasolar planets have been discovered to date, with thousands of additional candidates and tens of thousands more predicted to be detected by future facilities. After exoplanet discoveries have become routine, the next milestone is characterizing the atmospheres of a significant number of these worlds. The observing techniques that are currently available have biased the discovery and atmospheric characterization of exoplanets towards hot, giant planets on short-period orbits. Direct-imaging observations of exoplanets in reflected starlight will become available within this decade, and will enable the characterization of cold and temperate long-period exoplanets and their atmospheres. Characterizing this population of planets, which has remained out of reach for current techniques, is a key to understand the diversity of exoplanets and their formation and evolution processes. In this talk we address the physical fundamentals of reflected-starlight observations in order to derive practical conclusions for the planning and interpretation of the upcoming measurements. We also analyse the prospects for atmospheric characterization of exoplanets from reflected-starlight spectra with different observing strategies. Finally, we compute which of the known exoplanets are potentially observable with the upcoming direct-imaging space telescopes and discuss some interesting science cases.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2022-12-15',NULL,'13:00:00','Óscar Carrión','Observatoire de París',1,'',NULL,NULL,'/uploads/carteles/2022/12/2022-12-15(Oscar-Carrion)Seminario-818.pdf','',1,1),(819,'Point interactions in 1D relativistic quantum mechanics: physical parameters and symmetries',4,'Appart from the applications in several models, point interactions in one dimension also serve as a theoretical laboratory to investigate properties of some methods of regularisation and/or renormalisation, which are ubiquitous in quantum field theory, in simpler models in quantum mechanics. In the Schrödinger or Dirac equation, the term describing the particle\'s interaction with an external potential is usually given in terms of a product between the potential and the wave function. However, point potentials are described  by singular distributions, like the Dirac delta distribution or its derivatives, and products involving distributions are not universally defined in the (Schwarz\'s) theory of distributions. Mathematically, this problem is usually addressed  by using the approach of self-adjoint extensions (SAE) of symmetric operators. From this approach all the admissible point interactions are members of a family characterised by  4 real parameters, related to the boundary conditions the wave function must satisfy around the singular points. However, from a physicist\'s point of view, the SAE approach is somewhat abstract, and the physical interpretations of such parameters are not clear. Recently, we proposed an alternative and also mathematical consistent approach, based on Schwarz\'s theory of distributions, to deal with this problem. This distributional approach seems to be more physically appealing, and it results in the same family of admissible interactions obtained from SAE, with the advantage of specifying the details of the interaction as a distribution concentrated at the singular points. More recently, we applied this approach to the Dirac equation with an external point interaction, and were able to establish a relationship between the set of the original 4 parameters and a set of 4 physical parameters describing the singular potential, namely the strengths of a scalar, the two components of a Lorentz 2-vector and a pseudo scalar point potential. The identification of these relationships allowed us to study some physical symmetries of the system. In particular, by considering space inversion, we were able to define the notions of even and odd point interactions. The existence of odd point interactions in relativistic quantum mechanics may shed some light on the non relativistic problem of defining a point interaction properly associated to the derivative of a delta potential (an odd distribution).\r\n',9,'tasio@eio.uva.es','MathPhys','Sala de Seminarios B-118, Departamento de Física Teórica, Atómica y Óptica','2022-12-20',NULL,'12:30:00','J.T. Lunardi','State University of Ponta Grossa, Brazil',1,'',NULL,NULL,'/uploads/carteles/2022/12/2022-12-20(J.T.-Lunardi)Seminario-819.pdf','',1,1),(820,'Avances recientes en Mecánica de Fluidos Computacional',2,'Presentamos los últimos desarrollos de nuestro High-Order Spectral Element Solver (HORSES3D), un solver abierto de alto orden capaz de resolver una gran variedad de aplicaciones, incluyendo flujos compresibles (con o sin choques), flujos incompresibles, varios modelos de turbulencia RANS y LES, dinámica de partículas, flujos multifásicos y aeroacústica [1].\r\n\r\nDesarrollos recientes nos permiten simular multifísica compleja, incluyendo flujos turbulentos, multifásicos y cuerpos en movimiento. Además, presentamos trabajos recientes que combinan técnicas de machine learning y simulaciones de alto orden. \r\n\r\n[1] E Ferrer, G Rubio, G Ntoukas, W Laskowski, O Mario, S Colombo, A. Mateo-Gabín, F Manrique de Lara, D Huergo, J Manzanero, AM Rueda-Ramírez, DA Kopriva, E Valero. HORSES3D: a high order discontinuous Galerkin solver for flow simulations and multi-physic applications. arXiv:2206.09733 [3], 2022 ',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-01-19',NULL,'17:00:00','Esteban Ferrer','Universidad Politécnica de Madrid',1,'','act912023_foto2.jpeg',NULL,'/uploads/carteles/2023/01/2023-01-19(Esteban-Ferrer)Ateneo-820.pdf','',1,1),(821,'Invariantes discretos de foliaciones holomorfas del espacio proyectivo.',4,'',9,'tasio@eio.uva.es','GIR ECSING','Aula A-125. Facultad de Ciencias.','2023-01-20',NULL,'12:00:00','Omegar Calvo Andrade','Centro de Investigación en Matemáticas - CIMAT. Guanajuato, México.',1,'',NULL,NULL,'/uploads/carteles/2023/01/2023-01-20(Omegar-Calvo-Andrade)Seminario-821.pdf','',1,1),(822,'Computation of a rational first integral of given genus of a foliation on a Hirzebruch surface',4,'To decide whether a plane foliation has a rational first integral is an open problem. We provide an algorithm that, under certain conditions, decides about algebraic integrability of fixed genus which, in the affirmative case, computes a rational first integral. This algorithm uses the extension of the foliation to a Hirzebruch surface and the reduction of its dicritical singularities.\r\n\r\nThis is a joint work with Carlos Galindo and Francisco Monserrat.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVa. Edificio LUCIA','2023-02-03',NULL,'12:00:00','Elvira Pérez Callejo','Universitat Jaume I',1,'',NULL,NULL,'/uploads/carteles/2023/02/2023-02-03(Elvira-Perez-Callejo)Seminario-822.pdf','',1,1),(823,'Curvilinear Hilbert schemes and Algebraic Link Invariants of Plane Curve  Singularities',4,'Given an isolated reduced plane curve singularity, we are naturally interested in studying its geometric and topological properties. A possible approach makes use of homological invariants of the algebraic link of the singularity, such as the Triply-graded link homology introduced by Khovanov and Rozansky.\r\nHowever, the geometric understanding of such invariants is still very far, and punctual Hilbert schemes at the curve singularity come into play offering a fruitful geometric framework to give such link invariants an interpretation. In this direction we can find a theorem by Maulik and a conjecture by Oblomkov, Rasmussen and Shende that propose an interpretation at different depths of (polynomial and homological) link invariants in terms of the geometry of punctual Hilbert schemes and other classical invariants of the curve singularity.\r\nIn this talk we present a first step towards the above conjecture in the case of so-called \\emph{curvilinear} Hilbert schemes, which seem to play an interesting role in the theory, that we treat using tools coming from theory of $p$-adic integration.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','','0000-00-00',NULL,'12:00:00','Ilaria Rossinelli','École Polytechnique Fédérale de Lausanne',2,'',NULL,NULL,NULL,'',0,0),(824,'Ensemble Kalman Methods: Overview and New Developments',2,'Ensemble Kalman methods are a rich family of algorithms for sequential data assimilation and numerical solution of inverse problems. This talk will have three parts. First, I will provide a historical overview of ensemble Kalman methods from their development in numerical weather forecasting to their more recent adoption in the inverse problems community. Examples will be provided to illustrate how these methods are implemented in practice, and why they have become increasingly popular over the last decade. Second, I will show some contributions toward understanding ensemble Kalman methods, introducing a unified framework for their design and analysis based on continuum limits and statistical linearization. I will also discuss a novel non-asymptotic analysis that explains the success of ensemble Kalman methods even when deployed with a small ensemble size. Finally, in the third part of the talk, I will show methodological contributions to blend ensemble Kalman methods with machine learning for the co-learning of a time-evolving signal and their dynamics from partial and noisy observations.',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-02-08',NULL,'12:00:00','Daniel Sanz Alonso','University of Chicago',1,'','act2612023_DanielSanzAlonso.jpg',NULL,'/uploads/carteles/2023/02/2023-02-08(Daniel-Sanz-Alonso)Ateneo-824.pdf','',1,1),(825,'Curvilinear Hilbert schemes and Algebraic Link Invariants of Plane Curve Singularities',4,'Given an isolated reduced plane curve singularity, we are naturally interested in studying its geometric and topological properties. A possible approach makes use of homological invariants of the algebraic link of the singularity, such as the Triply-graded link homology introduced by Khovanov and Rozansky. \r\nHowever, the geometric understanding of such invariants is still very far, and punctual Hilbert schemes at the curve singularity come into play offering a fruitful geometric framework to give such link invariants an interpretation. In this direction we can find a theorem by Maulik and a conjecture by Oblomkov, Rasmussen and Shende that propose an interpretation at different depths of (polynomial and homological) link invariants in terms of the geometry of punctual Hilbert schemes and other classical invariants of the curve singularity.\r\nIn this talk we present a first step towards the above conjecture in the case of so-called curvilinear Hilbert schemes, which seem to play an interesting role in the theory, that we treat using tools coming from theory of $p$-adic integration.\r\n\r\n\r\n\r\nEl seminario tendrá lugar en Meet.\r\nPara participar y recibir el enlace de la reunión hay registrarse en el siguiente formulario:\r\nhttps://forms.gle/ww82QZRsmTeCUD62A',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','','2023-02-10',NULL,'12:00:00','Ilaria Rossinelli','École Polytechnique Fédérale de Lausanne (Switzerland)',1,'',NULL,NULL,'/uploads/carteles/2023/02/2023-02-10(Ilaria-Rossinelli)Seminario-825.pdf','',1,1),(826,'Fluidos con Mates',2,'En esta charla, realizando algunos experimentos, se pretende ilustrar el papel que juegan las matemáticas en la comprensión de la dinámica de fluidos. Se presentarán problemas clásicos, aplicaciones y mucho dinero en juego.',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-03-23',NULL,'17:00:00','Franciso Gancedo García','Universidad de Sevilla',1,'','act322023_charlaIMUSdetalle.jpg',NULL,'/uploads/carteles/2023/03/2023-03-23(Franciso-Gancedo-Garcia)Ateneo-826.pdf','',1,1),(827,'Empaquetamientos de Apolonio: un paseo amistoso',2,'Los empaquetamientos de Apolonio son configuraciones de círculos en el plano que se construyen mediante un procedimiento geométrico recursivo. Estas configuraciones gozan numerosas propiedades. En esta charla daremos una introducción básica de esta teoría. Utilizando numerosas ilustraciones y figuras, presentaremos nuevas construcciones en el plano y en el espacio, una generalización del conocido teorema de Descartes y una aplicación reciente en teoría de nudos que como consecuencia ofrece soluciones a una ecuación diofántica. ',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-03-02',NULL,'17:00:00','Jorge Luis Ramírez Alfonsín','Université de Montpellier',1,'','act922023_foto-RamirezAlfonsin.jpg',NULL,'/uploads/carteles/2023/03/2023-03-02(Jorge-Luis-Ramirez-Alfonsin)Ateneo-827.pdf','',1,1),(828,'Unlocking galaxy formation with spectroscopy',4,'Galaxy spectra encode a vast amount of information concerning the underlying stellar populations that allow us to explore the evolution of galaxies. I will give a general overview of how population synthesis has allowed us to understand  fundamental processes in extragalactic astrophysics and what major hurdles  prevent us from retrieving detailed formation histories from spectra. I will contrast standard methodology (based on model fitting) with data-driven  approaches (adopting multivariate analysis, information theory or machine learning methods), presenting some recent results related to the way local and global factors  affect galaxy formation.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2023-02-22',NULL,'13:00:00','Ignacio Ferreras','Instituto de Astrofísica de Canarias y University College London',1,'',NULL,NULL,'/uploads/carteles/2023/02/2023-02-22(Ignacio-Ferreras)Seminario-828.pdf','',1,1),(829,'El cálculo algebraico del indice de Poincaré-Hopf de campos vectoriales analítico reales usando Singular.',4,'Una singularidad aislada de un campo vectorial analítico real puede ser de dos tipos: singularidad algebraicamente aislada y no algebraicamente aislada. En el caso algebraicamente aislado, Eisenbud -Levine por un lado y Khimshiashvili por otro, encontraron una formula algebraica para calcular el indice usando una forma cuadrática bilineal, simétrica y no degenerada. En esta plática vamos a mostrar como se puede hacer ese calculo usando Singular: a computer algebra system for polynomial computations y hablaremos del cómo hacer el cálculo de este número en algunos casos concretos cuando la singularidad es no algebraicamente aislada.',52,'jorge.mozo@uva.es','GIR ECSING','Edificio LUCIA','2023-03-10',NULL,'12:00:00','Víctor Castellanos Vargas','Universidad Juárez Autónoma de Tabasco (México)',1,'',NULL,NULL,'/uploads/carteles/2023/03/2023-03-10(Victor-Castellanos-Vargas)Seminario-829.pdf','',1,1),(830,'Toric degenerations of Grassmannians',4,'Toric varieties are popular objects in algebraic geometry, as they can be modelled on polytopes and polyhedral fans. This is mainly because there is a dictionary between their geometric properties and the combinatorial invariants of their polytopes. This dictionary can be extended from toric varieties to arbitrary varieties through toric degenerations. In this talk, I will introduce the notion of toric degenerations which generalizes the fruitful correspondence between toric varieties and polytopes, to arbitrary varieties. There are prototypic examples of toric degenerations (of Grassmannians) which are related to Young tableaux and Gelfand-Cetlin polytopes. I will describe how to obtain such degenerations using the theory of Gröbner fans and tropical geometry. In particular, I will explain a construction of toric degenerations of Grassmannians whose combinatorics are governed by a family of tableaux including the classical semi-standard Young tableaux as an example.',9,'tasio@eio.uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2023-04-28',NULL,'12:00:00','Fatemeh Mohammadi','KU Leuven (Belgium)',1,'',NULL,NULL,'/uploads/carteles/2023/04/2023-04-28(Fatemeh-Mohammadi)Seminario-830.pdf','',1,1),(831,'Castelnuovo-Mumford regularity of projective monomial curves via sumsets',4,'Given $A=\\{a_0,\\ldots,a_{n-1}\\}$ a finite set of $n\\geq 4$ non-negative integers that we will assume to be in normal form, i.e., such that $0=a_0$ < $\\cdots$ < $a_{n-1}=d $ and relatively prime, the $s$-fold sumset of $A$ is the set $sA$ of integers obtained by collecting all the sums of $s$ elements in $A$. On the other hand, given an infinite field $k$, one can associate to $A$ the projective monomial curve $C_A$ parametrized by $A$: \\[C_A=\\{(v^d:u^{a_1}v^{d-a_1}:\\cdots:u^{a_{n-2}}v^{d-a_{n-2}}:u^d)\\}\\] where $(u:v)$ covers the whole projective line over $k$. In this talk, we will focus on the relation between the Castelnuovo-Mumford regularity of $C_A$ and the behaviour of the sumsets $sA$ and show how this provides a nice interplay between Commutative Algebra and Additive Number Theory.\r\n\r\nThis talk is based on a joint work with Philippe Gimenez.\r\n',9,'tasio@eio.uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2023-04-21',NULL,'12:00:00','Mario González','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/04/2023-04-21(Mario-Gonzalez)Seminario-831.pdf','',1,1),(832,'Mercados bilaterales de asignación: teoría y aplicaciones',2,'Los mercados bilaterales de asignación estudian la asignación justa y/o eficiente de objetos a agentes o de agentes entre sí en situaciones donde o bien no puede utilizarse dinero o el precio no es el único factor determinante de la asignación.\r\n\r\nEjemplos clásicos de estos mercados son la asignación de estudiantes a escuelas o universidades, la asignación de órganos de cadáver para trasplante o el intercambio de órganos entre donantes y receptores vivos, la asignación plazas de formación especializada entre graduados en medicina o la de trabajadores a empleadores.\r\n\r\nEn la charla exploraremos los algoritmos y mecanismos fundamentales de los mercados bilaterales de asignación, sus aplicaciones más conocidas y los nuevos desarrollos en el área.',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-04-20',NULL,'17:00:00','Antonio Romero Medina','Universidad Carlos III de Madrid',1,'','act2732023_Antonio Romero B.jpg',NULL,'/uploads/carteles/2023/04/2023-04-20(Antonio-Romero-Medina)Ateneo-832.pdf','',1,1),(833,'Ergodicity and the emergence of the hydrodynamic scale in quantum spin chains',4,'How do the laws of large-scale physics emerge from the microscopic dynamics of particles, spins, etc? This is one of the most important questions in theoretical physics, but there are few general and rigorous results, especially in many-body quantum systems. I will discuss our recent results where we establish in quite some generality aspects of emergence in quantum spin lattices (restricting for simplicity to spin chains): the phenomenon of ergodicity, and, most importantly, the emergence of the equations linearised hydrodynamics at the Euler scale. Ergodicity says that upon time averaging over long enough times, one recovers the ensemble description of statistical mechanics. In classical mechanics, this is because, under some conditions, the trajectory essentially covers the full phase space. But in many-body systems, with infinitely-many degrees of freedom, this notion is more subtle. I will explain how it works, and general results including our ``almost everywhere ergodicity\". I will then discuss how this connects to the emergence of the Euler (or ballistic) scale of hydrodynamics. Specifically, we have shown that under ballistic scaling, the asymptotic form of two-point correlation functions in spacetime is obtained by projections onto appropriate ``sound modes\" — related to the extensive conserved quantities of the model — whose propagation is described by a linearised Euler-type equation. The latter results are meaningful especially in spin chains which have the property of integrability, such as the Heisenberg chain, as these admit infinitely-many extensive conserved quantities. ',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2023-04-20',NULL,'11:00:00','Benjamin Doyon','Department of Mathematics, King\'s College London',1,'',NULL,NULL,'/uploads/carteles/2023/04/2023-04-20(Benjamin-Doyon)Seminario-833.pdf','',1,1),(834,'Entanglement Content of Localized Excitations: Symmetry Resolution',4,'In this talk I will introduce some basic ideas about entanglement measures in many-body quantum systems and I will present one of the leading approaches to computing such measures in 1D quantum field theory. This approach is based on relating entanglement measures to correlations functions of a special class of fields called branch point twist fields. Once this connection has been made, the problem of computing entanglement measures is reduced to computing correlation functions, which is generally technically difficult. I will explain how these correlation functions become especially simple for certain types of excited states of quantum field theory and how this simplicity allows us to compute many different measures very explicitly, including a measure that has attracted a lot of interest recently: the symmetry resolved entanglement entropy.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2023-04-20',NULL,'12:30:00','Olalla Castro Alvaredo','Department of Mathematics, City,  University of London',1,'',NULL,NULL,'/uploads/carteles/2023/04/2023-04-20(Olalla-Castro-Alvaredo)Seminario-834.pdf','',1,1),(835,'Introducción a la computación cuántica (sin la física)',6,'En este breve curso introductorio presentaremos de manera sencilla los conceptos fundamentales de la computación cuántica: qubits, puertas cuánticas y circuitos cuánticos. Con estas herramientas estaremos preparados para comprender los principales algoritmos cuánticos.\r\n\r\nEl registro es gratuito pero necesario para poder asistir al curso.\r\n\r\nMás información en:\r\n\r\n https://eventos.uva.es/97475/detail/introduccion-a-la-computacion-cuantica-sin-la-fisica.html\r\n\r\n',9,'tasio@eio.uva.es','GIRs SINGACOM y TAAMC','Aula 11, Edificio de Tecnologías de la Información y las Telecomunicaciones','2023-04-26','2023-04-27','16:00:00',' Eduardo Sáenz de Cabezón','Universidad de La Rioja',1,'','act2832023_89850E610430D858D371B3455C374A13.jpg',NULL,'/uploads/carteles/2023/04/2023-04-26(-Eduardo-Saenz-de-Cabezon)Explora-835.pdf','',1,1),(836,'Rigidez de los lazos homoclínicos',4,'Demostraré que la clasificación formal y analítica de la aplicación de primer retorno de un lazo homoclínico en el plano son \"genéricamente\" iguales, y que dos lazos homoclínicos reales con aplicaciones de primer retorno analíticamente conjugadas son analíticamente equivalentes. Este trabajo fue realizado en colaboración con Maja Resman y Loic Teyssier.\r\n\r\n\r\nEsta charla es parte del Seminario Iberoamericano de Matemáticas - Sesión 120\r\n\r\n',9,'tasio@eio.uva.es','GIR AFA (Análisis Funcional Aplicado) y GIR ECSING (Ecuaciones y Singularidaes).','Seminario A-125. Facultad de Ciencias.','2023-04-20',NULL,'12:00:00','Daniel Panazzolo','Université Haute-Alsace (D. Panazzolo) y Université de Lille (S. Malek)',1,'El seminario se podrá seguir online en https://teams.microsoft.com/dl/launcher/launcher.html?url=%2F_%23%2Fl%2Fmeetup-join%2F19%3Ameeting_NjkwYmVjY2UtNjZjZS00ZTg4LWI2MTUtNzA3NjNmOWFjOWE1%40thread.v2%2F0%3Fcontext%3D%257b%2522Tid%2522%253a%25225f2a1fdf-b75',NULL,NULL,'/uploads/carteles/2023/04/2023-04-20(Daniel-Panazzolo)Seminario-836.pdf','',1,1),(837,'Double-scale Gevrey asymptotics for logarithmic type solutions to singularly perturbed linear initial value problems',4,'We examine a family of linear partial differential equations both singularly perturbed in a complex parameter and singular in complex time at the origin. These equations entail forcing terms that combine polynomial and logarithmic type functions in time and that are bounded holomorphic on horizontal strips in one complex space variable. A set of sectorial holomorphic solutions are built up by means of complete and truncated Laplace transforms relatively to time and parameter and Fourier inverse integral in space. Asymptotic expansions of these solutions with respect to time and parameter are investigated and two distinguished Gevrey type expansions in monomial and logarithmic scales are exhibited.\r\n\r\nEsta charla es parte del Seminario Iberoamericano de Matemáticas - Sesión 120',9,'tasio@eio.uva.es','GIR AFA (Análisis Funcional Aplicado) y GIR ECSING (Ecuaciones y Singularidades)','Seminario A-125. Facultad de Ciencias.','2023-04-20',NULL,'13:00:00','Stéphane Malek','Université de Lille',1,'',NULL,NULL,'/uploads/carteles/2023/04/2023-04-20(Stephane-Malek)Seminario-837.pdf','',1,1),(838,'Exotic configuration spaces and generating series of their invariants',4,'A notion of exotic (ordered) configuration spaces of points on a space $X$ was suggested by Yu. Baryshnikov. We consider unordered analogues of these spaces. They are generalizations of the usual configuration spaces $M_kX=\\{(x_1,\\ldots,x_k)\\in X^k: x_i\\ne x_j \\mbox{ for } i\\ne j\\}/S_k$ of $k$point subsets of $X$ and of the symmetric powers $S^kX=X^k/S_k$. The idea is to consider collections of points of $X$ marked by different \"colours\" when some collisions are permitted and some forbidden. For example, one can consider point coloured by red, blue and green so that no points of different colours may coincide, and also not more than $m$ points of the same colour may coincide. For the classical configuration spaces one has Macdonald (type) equations. For example, for the symmetric powers one has\r\n$$\r\n1+\\sum_{k=1}^{\\infty}\\chi(S^kX)t^k=(1-t)^{-\\chi(X)\\,.}\r\n$$\r\nThere are analogues of these equations for exotic configuration spaces. Moreover, if $X$ is a quasiprojective variety, one has equations for the generating series of the classes of these configuration spaces in the Grothendieck ring of complex quasiprojective varieties. They are formulated in terms of the so-called power structure over this Grothendieck ring constracted earlier with I. Luengo and A. Melle. These equations imply equations for the generating series of other invariats, say, of the Hodge-Deligne polynomials.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2023-05-05',NULL,'12:00:00','Sabir M. Gusein-Zade','Moscow State University',1,'',NULL,NULL,'/uploads/carteles/2023/05/2023-05-05(Sabir-M.-Gusein-Zade)Seminario-838.pdf','',1,1),(839,'Inteligencia artificial y análisis probabilistas de seguridad de carreteras y autovías',2,'La charla describe en detalle cómo puede implementarse un modelo estadístico para realizar análisis probabilistas de seguridad en carreteras y autovías, comenzando por recorrer la carretera en cuestión, identificando los lugares dónde hay que tomar decisiones, ejecutar acciones o pueden producirse incidentes durante el recorrido, descubriendo las variables relevantes del problema, asociando subredes bayesianas a cada lugar, ensamblando éstas en la red general, que contine miles de variables, y calculando las probabilidades de todos los posibles incidentes. Ello permite informar a los conductores de las probabilidades de accidente en cada punto del recorrido.  Puesto que el trabajo con la red bayesiana completa exige un coste computacional muy alto, se particiona ésta en partes o subredes de reducido tamaño, con pequeños solapes entre subredes contiguas, de forma que pueda trabajarse con estas partes con un tiempo de cálculo varios órdenes de magnitud menor. Estas particiones, permiten a su vez, ser utilizadas para evaluar las probabilidades de los incidentes dependiendo del instante en que se recorren los correspondientes subtramos. Nótese que cada vez que recorremos una misma carretera las condiciones son diferentes (hora del día, tiempo atmosférico, conductor, congestión de la misma, velocidad, visibilidad, etc. La función de probabilidad conjunta de los miles de variables permite, además, explicar las causas de los posibles accidentes y realizar un análisis profundo de los elementos que intervienen en cada uno con más frecuencia. Se trata, por tanto, de un ejemplo de inteligencia artificial, que utiliza métodos de aprendizaje y análisis de situaciones siempre cambiantes, basadas en el razonamiento bayesiano.\r\n',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-05-11',NULL,'12:00:00','Enrique Castillo Ron','Universidad de Cantabria',1,'','act852023_EnriqueCastillotransparent.png',NULL,'/uploads/carteles/2023/05/2023-05-11(Enrique-Castillo-Ron)Ateneo-839.pdf','',1,1),(842,'A Darcy-Forchheimer-Galbrun linear model for small perturbations of a flow in rigid porous materials',4,'The classic Galbrun model is extended in the case of a porous material with a rigid solid frame. The derivation uses a heuristic approach from the general (nonlinear) equations of continuum mechanics, adapted to take into account the dissipative effects of the porous material and the porosity and the isothermal character of its motion. This linear model is obtained by writing the model first in a time-dependent spatial reference configuration and then linearised by using the derivatives of the constitutive laws in an Arbitrary Lagrangian-Eulerian configuration.',109,'paulamaria.lopez@uva.es','G.I.R. ANEODA','Sala de Grados I, Facultad de Ciencias','2023-05-22',NULL,'13:00:00','Andrés Prieto Aneiros','CITMAga, Universidade da Coruña',1,'',NULL,NULL,'/uploads/carteles/2023/05/2023-05-22(Andres-Prieto-Aneiros)Seminario-842.pdf','',1,1),(843,'Defect-induced charge transport, excitonic and magneto-optical properties of van der Waals interfaces from first principles.',4,'The study of charge transfer, magneto-optical and excitonic properties of van der Waals matter has been the subject of intense research in recent years due to the importance of these materials for ultrathin optoelectronic, photovoltaic and photocatalytic components. In such applications, quasi-particles and excitons, often act as carriers in charge, spin and energy transfer processes, which can be significantly impacted by structural complexity, reduced dimensionality, interface composition or the presence of impurities and adatoms.\r\nIn this talk, I will address some of these complexities from first principles, focusing on transition-metal dichalcogenides (TMDC) and TMDC-graphene interfaces.\r\nI will discuss the role of state localization due to atomic-size defects on the optical and magnetic properties [1, 2]. Using many-body perturbation theory, I will show how the excitonic picture associated with the presence of defects, can lead to structurally controllable excitonic magnetic response [3]. I will delve into the role of symmetries in charge transfer and excitonic properties on TMDC-graphene heterobilayers with monoatomic chalcogen vacancies. I will analyze the impact of the subgap defect-based features on the microscopic dynamics and excitonic features. Finally, I will show how defects can become a slow coherent transport channel for interlayer charge transfer [4] while simultaneously stronlgy altering the exciton properties of the TMDC-graphene interface due to a combination of folding, screening and mixing of the optical transitions [5].\r\n\r\n[1] E. Mitterreiter, B. Schuler, A. Micevic, D. Hernangómez-Pérez, et al. Nat. Comm. 12, 3822 (2021).\r\n[2] T. Amit, D. Hernangómez-Pérez, G. Cohen, D. Y. Qiu, and S. Refaely-Abramson, Phys. Rev. B 106, L161407 (2022).\r\n[3] A. Hötger, T. Amit, J. Klein et al. npj 2D Mater. Appl. 7, 30 (2023).\r\n[4] D. Hernangómez-Pérez, A. Donarini, and S. Refaely-Abramson, Phys. Rev. B 107, 075417 (2023). Editors\' Suggestion.\r\n[5] D. Hernangómez-Pérez, A. Kleiner, and S. Refaely-Abramson (arXiv:2303.13650).\r\n',9,'tasio@eio.uva.es','MathPhys','Sala de Seminarios B-118, Departamento de Física Teórica, Atómica y Óptica','2023-05-29',NULL,'12:00:00','Daniel Hernangómez Pérez','Weizmann Institute of Science',1,'',NULL,NULL,'/uploads/carteles/2023/05/2023-05-29(Daniel-Hernangomez-Perez)Seminario-843.pdf','',0,1),(844,'Generalised holographic dark energy and novel entropies',4,'It is explained the concept of generalised holographic dark energy. It is shown that entire evolution of the universe from the inflation till dark energy maybe provided by holographic dark energy with specific cut-offs. All known specific holographic dark energies, like Tsallis, Renyi, etc are shown to be particular examples of such generalised holographic dark energy introduced in Nojiri-Odintsov, Gen.Rel.Grav. 38 (2006) 1285-1304. The relation of holographic dark energy with modified gravity is also explained. At the second part of talk novel 4 or 5 parameters dependent entropy which generalises the Bekenstein-Hawking, Tsallis, Renyi, Barrow, Sharma- Mittal,Kaniadakis and Loop Quantum Gravity entropies is introduced following Nojiri-Odintsov- Faraoni, Phys.Rev.D 105 (2022) 4, 044042. We address the implications of the generalized entropies on black hole thermodynamics as well as on cosmology, and discuss various constraints of the entropic parameters from different perspectives. The relation to holographic dark energy is briefly discussed. Our findings indicate that entropy is not fundamental quantity but may serve the basis for qualitatively new approaches to modern cosmology.',9,'tasio@eio.uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2023-05-23',NULL,'15:00:00','Sergei D. Odintsov','Instituto de Ciencias del Espacio ICE/CSIC-IEEC and ICREA',1,'',NULL,NULL,'/uploads/carteles/2023/05/2023-05-23(Sergei-D.-Odintsov)Seminario-844.pdf','',0,1),(845,'On Boussinesq and Boussinesq type systems',2,'Boussinesq systems are system versions of  well nonlinear dispersive equations such as the  Korteweg-de Vries or Benjamin-Ono equations. They lead to many interesting mathematical (in particular) issues and the talk will survey the state of the art in the domain and present challenging open questions.',9,'tasio@eio.uva.es','','Sala de Grados I, Facultad de Ciencias','2023-06-28',NULL,'12:00:00','Jean-Claude Saut','Université Paris-Sud',1,'','act1262023_IMG_4888.jpg',NULL,'/uploads/carteles/2023/06/2023-06-28(Jean-Claude-Saut)Ateneo-845.pdf','',1,1),(846,'Seminario Iberoamericano de Matemáticas SIM 122. Una introducción a la conjetura de Casas–Alvero.',4,'Sea k un cuerpo de caracterı́stica cero, d un número entero estrictamente positivoy x una variable independiente. Sea f ∈ k[x] un polynomio mónico de grado d. Para i ∈{1, . . . , d − 1}, sea f (i) la i-ésima derivada de f . Supongamos que para todo i ∈ {1, . . ., d − 1} el polinomio f (i) tiene un factor comun no constante con f . La conjetura de Casas–Alvero dice que, bajo estas hipótesis, existe a ∈ k tel que f (x) = (x − a)d .\r\nExiste un conjunto infinito de grados d para los cuales esta conjetura ha sido demostrada. El conjunto de grados d para los cuales la conjetura sigue abierta tambien es infinito (el elemento más pequeño de este conjunto es d = 20).\r\nEn esta conferencia se hará un resumen (no exhaustivo) de resultados parciales conocidos sobre esta cuestión\r\n\r\n ',52,'jorge.mozo@uva.es','GIR ECSING','Casas del Tratado (Tordsesillas).','2023-06-26',NULL,'17:00:00','Mark Spivakovsky','Université Paul Sabatier (Toulouse, Francia)',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-26(Mark-Spivakovsky)Seminario-846.pdf','',1,1),(847,'Seminario Iberoamericano de Matemáticas SIM 122. La conjetura de la órbita periódica para foliaciones holomorfas.',4,'Sea M una variedad foliada en que todas las hojas son compactas. Fue conjeturado que, dado un compacto K, las hojas que intersectan a K tienen volumen uniformemente acotado superiormente. Es un tema de investigación introducido por Reeb. Conviene resaltar que la conjetura no es cierta en general. El contraejemplo más celebrado fue dado por Sullivan, quien presentó un ejemplo de variedad compacta de dimensión 5, foliada por círculos, en la que la longitud de los círculos es ilimitada.  \r\n En el contexto holomorfo, se sabe que la conjetura es cierta si la variedad es Kähler y compacta (Edwards, Millet y Sullivan) y se conocen contraejemplos para variedades no compactas. Estudiaremos este problema tanto en el contexto local como en el global. ',52,'jorge.mozo@uva.es','GIR ECSING','Casas del Tratado (Tordsesillas).','2023-06-26',NULL,'18:30:00','Javier Ribón','Universidade Federal Fluminense, Niterói, Brasil',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-26(Javier-Ribon)Seminario-847.pdf','',1,1),(848,'Rational methods for abstract evolution problems without order reduction',9,'Starting from an A-stable rational approximation to $e^z$ of order $p$,  \r\n$$r(z) = 1 + z + · · · + z^p/p! + O(z^p+1), $$\r\nfamilies of stable methods are proposed to time discretize abstract initial value problems of the type $u\'(t) = Au(t) + f(t)$. These numerical procedures turn out to be of order p, thus overcoming the order reduction phenomenon. A first approach to extend the methods to semilinear problems of the form $u\'(t) = Au(t) + f(t,u)$ is also presented.',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'13:20:00','Carlos Arranz Simón','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Carlos-Arranz-Simon)Seminario-de-Doctorado-848.pdf','',0,0),(849,'Single Server Private Information Retrieval Schemes over Rings',9,'Many protocols protect the user and server from third parties while accessing the data. Nevertheless, no security measure protects the user from the server. As a result of this demand, Private Information Retrieval (PIR) protocols emerged. A Private Information Retrieval (PIR) scheme allows users to retrieve data from a database without disclosing to the server information about the identity of the data retrieved. Information-theoretic privacy and computational privacy are two different approaches to this protocol. The schemes based on information theoretic privacy is secure against unlimited computational sources and are only possible in a Distributed Storage System (DSS) with more than one server. If there is one server in a system, information-theoretic privacy can be provided by sending the whole database, but this is an infeasible method. The PIR scheme based on computational privacy assumes computers have limited power. And hence, it requires computational difficulty.\r\n\r\n\r\n\r\nThe first computational PIR scheme based on coding theory is presented in [ Lukas Holzbaur, Camilla Hollanti, and Antonia Wachter-Zeh. Computational code-based single-server private information retrieval. In 2020 IEEE International Symposium on Information Theory (ISIT), pages 1065–1070, 2020.]. However, Bordage and Lavauzelle presented an attack that occurs in polynomial time and with high probability [Sarah Bordage and Julien Lavauzelle. On the privacy of a code-based single-server computational PIR scheme. Cryptogr. Commun., 13:519–526, 2020.].\r\n\r\n\r\n\r\nWe consider in this work that data is stored in a single database and again used the coding theory perspective of the scheme Holzbaur, Hollanti and Wachter-Zeh but for codes over rings where the attack in  [Sarah Bordage and Julien Lavauzelle. On the privacy of a code-based single-server computational PIR scheme. Cryptogr. Commun., 13:519–526, 2020.] is not feasible. We present a single server computational PIR scheme based on cyclic codes over $Z_m$, where $m$ is a composite number.\r\n\r\n\r\nJoint work with Edgar Martínez-Moro and Diego Ruano',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'09:30:00','Seyma Bodur ','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Seyma-Bodur-)Seminario-de-Doctorado-849.pdf','',0,0),(850,'Combinatorics of sequences of blow-ups',9,'Through this talk I will review some of the principal results of my thesis. The main object of our research is the study of the exceptional divisor $E$ living in the sky $Z_{s}$ of a sequence of blow-ups at smooth centers: $Z_{s}\\xrightarrow{\\pi_{s}} Z_{s-1}\\xrightarrow{\\pi_{s-1}}\\cdot\\cdot\\cdot\\xrightarrow{\\pi_{2}} Z_{1}\\xrightarrow{\\pi_{1}} Z_{0}$. More precisely, we are interested in giving if possible an explicit presentation of the Chow ring $A^{\\bullet}(Z_{s})$ as well as a numerical characterization of final divisors, that is irreducible components of $E$ that can be regularly contracted, by using the numerical data encoded by the intersection form on divisors with exceptional support $\\mathcal{I}_{E,Z_{s}}$. We will present results for sequences of point blow-ups in arbitrary dimension and for sequences of point and rational curve blow-ups in dimension $3$.\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'08:30:00','Daniel Camazón Portela','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Daniel-Camazon-Portela)Seminario-de-Doctorado-850.pdf','',0,0),(852,'Modelling critical transitions: results on d-concave equations and applications in population ecology',9,'Nonautonomous equations are appropriate models when considering populations affected by time-varying phenomena such as climate variability or the alternation of seasons. In this talk, we discuss nonautonomous scalar equations with concave derivative, which are particularly suitable for modelling populations subject to Allee effect. Asymptotic transitions between a past and a future given by equations of this type are considered. A classification result on the dynamics of such transitions is presented and illustrated with numerical simulations.',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'10:20:00','Jesús Dueñas Pamplona','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Jesus-Duenas-Pamplona)Seminario-de-Doctorado-852.pdf','',0,0),(853,'Multiplicación distribuida de matrices por medio de códigos algebro-geométricos',9,'Multiplicar matrices es una operación fundamental que interviene en el entrenamiento de modelos de machine learning y en el procesamiento de señales. Esto justifica la necesidad de encontrar algoritmos que nos permitan realizar este cálculo de manera lo más rápida posible. Como es habitual, una solución viene de mano de la computación paralela. Podemos considerar dividir la multiplicación inicial en distintas multiplica\\-ciones de matrices más pequeñas que pueden ser evaluadas simultáneamen\\-te. Una vez calculadas, el resultado de todas ellas se utiliza para reconstruir la multiplicación original \\cite{cadambe}. Sin embargo, al implementar este sistema, puede ocurrir que entre las numerosas multiplicaciones que hay que efectuar, algunas tengan tiempos de ejecución mucho mayores, principalmente por motivos intrísecos a la comunicación entre los nodos que conforman la red de computación paralela. Para atajar este problema, existen algoritmos basados en códigos correctores de pérdidas que permiten recuperar el resultado de la operación original sin necesidad de obtener las respuestas de todos los nodos trabajadores \\cite{dutta}. Presentamos estos sistemas de multipli\\-cación distribuida de matrices junto con una generalización de los mismos que emplea ``one-point codes\'\'. Además, se mostrará cómo se pueden estudiar los parámetros del código resultante mediante el semigrupo de Weierstrass asociado a la curva sobre la que se define el código.\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'14:10:00','Adrián Fidalgo-Díaz','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Adrian-Fidalgo-Diaz)Seminario-de-Doctorado-853.pdf','',0,0),(854,'Gelfand Triplets, Lie Algebras and Quantum Mechanics',9,'Gelfand triplets are used in Quantum Mechanics with a variety of purposes, including a rigorous presentation of the Dirac Formulation of Quantum Mechanics, or a mathematical construction of certain structures linked to unstable quantum states, such as Gamow vectors. In addition, Gelfand triplets permit the combination of a series of structures commonly used in quantum textbooks, such as  discrete and continuous basis or other features. Here, we present a limited number of examples thereof. Gelfand triplets will serve as a support of representations in terms of continuous operators of some examples of Lie algebras.',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'13:45:00','Manuel Gadella Urquiza','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Manuel-Gadella-Urquiza)Seminario-de-Doctorado-854.pdf','',0,0),(855,'Sumsets, semigroups and Castelnuovo-Mumford regularity of projective monomial curves',9,'Given $A=\\{a_0,\\ldots,a_{n-1}\\}$ a finite set of $n\\geq 4$ non-negative integers that we will assume to be in normal form, i.e., such that $0=a_0< a_1 <\\cdots < a_{n-1}=d$ and relatively prime, the $s$-fold sumset of $A$ is the set $sA$ of integers obtained by collecting all the sums of $s$ elements in $A$. On the other hand, given an infinite field $k$, one can associate to $A$ the projective monomial curve $\\mathcal{C}_A$ parametrized by $A$, that is, the Zariski closure of \\[ \\{(v^d:u^{a_1}v^{d-a_1}:\\cdots:u^{a_{n-2}}v^{d-a_{n-2}}:u^d) \\mid (u:v) \\in \\mathbb{P}_k^{ 1}\\} \\subset \\mathbb{P}_k^{\\, n} \\, .\\] This allows us to establish a bridge between Additive Number Theory and Commutative Algebra and obtain some results connecting the Castelnuovo-Mumford regularity of $\\mathcal{C}_A$ and the behaviour of the sumsets $sA$.\r\n\r\nThis talk is based on a joint work with Philippe Gimenez',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'13:25:00','Mario González Sánchez','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Mario-Gonzalez-Sanchez)Seminario-de-Doctorado-855.pdf','',0,0),(856,'El problema de Dulac en $\\mathbb{R}^3$ para perturbaciones de centros lineales',9,'El problema de Dulac estudia si un campo de vectores analítico en dimensión 2 define un número finito de ciclos límite en un entorno de la singularidad. Y. Ilyashenko y J. Ecalle dieron una respuesta positiva a este problema en los años 1991-1992. Los campos que son perturbaciones de un centro lineal en $\\mathbb{R}^2$  forman una familia donde el problema de Dulac se resuelve de manera sencilla, estudiando difeomorfismos analíticos dados por las aplicaciones de retorno de Poincaré.\r\n\r\nEn este trabajo, consideramos la familia $\\mathcal{H}_3$ de campos de vectores en $\\mathbb{R}^3$ que son perturbaciones de centros lineales, y para los cuales resolvemos el problema de Dulac de finitud de ciclos límite. Establecemos todas las configuraciones de ciclos posibles para los campos de vectores de esta familia. Existe un entorno $U$ donde o bien no hay ciclos en $U$, o bien están distribuidos en un número finito de superficies centrales, o bien $U$ está foliado por ciclos fuera de la curva de singularidades.\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'09:55:00','María Martín Vega','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Maria-Martin-Vega)Seminario-de-Doctorado-856.pdf','',0,0),(857,'Stability properties for ultraholomorphic classes defined by a weight matrix',9,'We present a characterization of some stability properties for Carleman-Roumieu ultraholomorphic classes, defined on sectors and in terms of a weight matrix. \r\n\r\nWe generalize the result of J. A. Siddiqi and M. Ider for such classes defined on sectors not wider than a half plane and in terms of a single sequence which controls (except for a constant and a geometric factor) the growth of the complex derivatives. More precisely, we generalize in two directions:\r\n	\r\n(i) We give the proof in the general weight matrix setting and get, in particular, the corresponding theorem for the sequence case.\r\n	\r\n(ii) We extend the list of stability properties and consider sectors of unrestricted opening. This generalization rests of the construction, under suitable assumptions, of the characteristic functions in arbitrary sectors.\r\n	\r\n	\r\nJoint work with J. Jiménez-Garrido, J. Sanz and G.~Schindl.\r\n\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'14:30:00','Ignacio Miguel Cantero','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Ignacio-Miguel-Cantero)Seminario-de-Doctorado-857.pdf','',0,0),(858,'Entanglement-assisted quantum error-correcting codes from subfield subcodes of projective Reed-Solomon codes',9,'Considering subfield subcodes of linear codes is a standard technique for constructing long linear codes over a small finite field. For instance, BCH codes can be obtained in this way from Reed-Solomon codes. The main problem when considering subfield subcodes is computing the dimension and obtaining a basis for the subfield subcode. In this talk we focus on projective Reed-Solomon codes, and we obtain bases for both the subfield subcodes and their duals. This knowledge over the primary and the dual codes allows us to construct both symmetric and asymmetric entanglement-assisted quantum error-correcting codes, which in many cases have new or better parameters than the ones available in the literature. Moreover, with this approach from evaluation codes, we can also evaluate in different sets of points, for instance the roots of a trace function. In this way we are able to obtain classical linear codes with record parameters according to codetables.de, and new quantum codes.',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'11:10:00','Rodrigo San José Rubio','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Rodrigo-San-Jose-Rubio)Seminario-de-Doctorado-858.pdf','',0,0),(859,'Improving Model Choice in Classification: An Approach Based on Clustering of Covariance Matrices',9,'This work introduces a refinement of the Parsimonious Model for fitting a Gaussian Mixture. The improvement is based on the consideration of groupings of the covariance matrices according to a criterion, such as sharing Principal Directions. This and other similarity criteria that arise from the spectral decomposition of a matrix are the bases of the Parsimonious Model. The classification can be achieved with simple modifications of the CEM (Classification Expectation Maximization) algorithm, using in the M step suitable estimation methods known for parsimonious models. This approach leads to propose Gaussian Mixture Models for model-based clustering and discriminant analysis, in which covariance matrices are clustered according to a parsimonious criterion, creating intermediate steps between the fourteen widely known parsimonious models. The added versatility not only allows us to obtain models with fewer parameters for fitting the data, but also provides greater interpretability. We show its usefulness for model-based clustering and discriminant analysis, providing algorithms to find approximate solutions verifying suitable size, shape and orientation constraints, and applying them to both simulation and real data examples.\r\n',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'13:05:00','David Rodríguez Vítores ','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(David-Rodriguez-Vitores-)Seminario-de-Doctorado-859.pdf','',0,0),(860,'Stable recovery of piecewise constant conductances on networks with boundary',9,'Recovering the conductances of a well-connected spider network with boundary from its Dirichlet-to-Neumann map is an exponentially ill-posed problem for large networks, so despite there is an exact algorithm to solve it [1],  the resulting network is very different from the original one. This problem is the discrete analogous to Calderon\'s Inverse Problem, in which knowing a-priori that the conductivity is piecewise constant with a bounded number of unknown values makes the problem Lipschitz stable [2].\r\n\r\nWe propose to introduce the hypothesis analogous for the discrete problem that the conductances are constant in each subset of a partition of the set of edges such that the number of subsets is much smaller than the total number of edges and we formulate the problem as a polynomial optimization one, in which we minimize the difference between the Dirichlet-to-Neumann map of the recovered network and the given one plus a term which penalizes the deviation from this hypothesis. We show examples in which we are able to accurately recover the conductances solving this problem.\r\n\r\nJoint work with Ángeles Carmona, Andrés Marcos Encinas and María José Jiménez.\r\n\r\n[1] C. Araúz, A. Carmona, A.M. Encinas. Overdetermined partial boundary value problems on finite networks. Journal of Mathematical Analysis and Applications, 423: 191-207 (2015).\r\n	\r\n[1] G. Alessandrini, S. Vessella. Lipschitz stability for the inverse conductivity problem. Advances in Applied Mathematics. 35: 207-241 (2005).',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'09:05:00','Álvaro Samperio','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/06/2023-06-28(Alvaro-Samperio)Seminario-de-Doctorado-860.pdf','',0,0),(861,'Programa de Doctorado en Matemáticas',13,'<p></p><p>\r\n\r\n\r\n	\r\n	\r\n	\r\n	\r\n\r\n</p>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/850\">08:30-09:05 Daniel Camazón Portela:</a></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Combinatorics of sequences of blow-ups\"</i></font></h2><br><h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/860\">09:05-09:30 Álvaro Samperio: </a></font>\r\n</h2><h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Stable\r\nrecovery of piecewise constant conductances on networks with\r\nboundary”</i></font></h2>\r\n<p class=\"western\" style=\"line-height: 100%; margin-bottom: 0cm\" align=\"left\">\r\n<font face=\"Arial\"><br></font>\r\n\r\n</p>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/849\">09:30-09:55 Seyma Bodur:</a></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\"> “<i>Single\r\nServer Private Information Retrieval Schemes over Rings”</i></font></h2><h2 class=\"western\" align=\"center\"><br></h2><h2 class=\"western\" align=\"center\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/856\">09:55-10:20 María Martín Vega:</a></font></h2><h2 class=\"western\" align=\"left\"> \r\n</h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>El\r\nproblema de Dulac en R</i></font><font face=\"Arial\" color=\"#000000\"><sup><i>3</i></sup></font><font face=\"Arial\" color=\"#000000\"><i>\r\npara perturbaciones de centros lineales”</i></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\"><br></font>\r\n\r\n</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/852\">10:20-10:45 Jesús Dueñas Pamplona: </a><a name=\"_GoBack\"></a></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Modelling\r\ncritical transitions: results on d-concave equations and applications\r\nin population ecology”</i></font> 	</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><br></font>\r\n\r\n</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividad/848\">10:45-11:10 Carlos Arranz Simón: </a>\r\n</font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“</font><font face=\"Arial\" color=\"#000000\"><i><span style=\"background: #ffffff\">Rational\r\nmethods for abstract evolution problems without order reduction”</span></i></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\"><br></font>\r\n\r\n</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/858\">11:10-11:35 Rodrigo San José Rubio:</a></font>\r\n</h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Entanglement-assisted\r\nquantum error-correcting codes from subfield subcodes of projective\r\nReed-Solomon codes”</i></font></h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><br></font>\r\n\r\n</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\">11:30-12:00 Pausa café</font></h2>\r\n<p class=\"western\" style=\"line-height: 100%; margin-bottom: 0cm\" align=\"left\">\r\n<font face=\"Arial\"><br></font>\r\n\r\n</p>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividad/859\">13:05- 13:25 David Rodríguez Vítores: </a></font>\r\n</h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Improving\r\nModel Choice in Classification: An Approach Based on Clustering of\r\nCovariance Matrices” </i></font>\r\n</h2>\r\n<p class=\"western\" style=\"line-height: 100%; margin-bottom: 0cm\" align=\"center\">\r\n<font face=\"Arial\"><br></font>\r\n\r\n</p>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/855\">13:25-13:45 Mario González Sánchez:</a></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Sumsets,\r\nsemigroups and Castelnuovo-Mumford regularity of projective monomial\r\ncurves”</i></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\"><br></font>\r\n\r\n</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/854\">13:45-14:10 Manuel Gadella Urquiza: </a></font>\r\n</h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Gelfand\r\nTriplets, Lie Algebras and Quantum Mechanics” 	</i></font></h2>\r\n\r\n<p class=\"western\" style=\"line-height: 100%; margin-bottom: 0cm\" align=\"center\">\r\n<font face=\"Arial\"><br></font>\r\n\r\n</p>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/853\">14:10-14:30 Adrián Fidalgo-Díaz: </a></font></h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Multiplicación\r\ndistribuida de matrices por medio de códigos algebro-geométricos”</i></font></h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><br></font>\r\n\r\n</h2>\r\n<h2 class=\"western\" align=\"left\"><font face=\"Arial\"><a href=\"http://www.imuva.uva.es/es/actividades/ver/857\">14:30-15:00 Ignacio Miguel Cantero: </a></font>\r\n</h2>\r\n<h2 class=\"western\" align=\"center\"><font face=\"Arial\" color=\"#000000\">“<i>Stability\r\nproperties for ultraholomorphic classes defined by a weight matrix”</i></font></h2>\r\n<p class=\"western\" style=\"line-height: 100%; margin-bottom: 0cm\" align=\"left\">\r\n<br>\r\n\r\n</p>\r\n\r\n<p><style type=\"text/css\">h2 { color: #2e74b5; text-align: left; page-break-inside: avoid; orphans: 2; widows: 2; margin-top: 0.07cm; margin-bottom: 0cm; direction: ltr; background: transparent; page-break-after: avoid }h2.western { font-family: serif; font-size: 13pt; so-language: es-ES }h2.cjk { font-family: ; font-size: 13pt; so-language: zh-CN }h2.ctl { font-family: ; font-size: 13pt; so-language: hi-IN }p { color: #000000; line-height: 115%; text-align: left; orphans: 2; widows: 2; margin-bottom: 0.25cm; direction: ltr; background: transparent }p.western { font-family: \"Liberation Serif\", serif; font-size: 12pt; so-language: es-ES }p.cjk { font-family: \"Noto Serif CJK SC\"; font-size: 12pt; so-language: zh-CN }p.ctl { font-family: \"Lohit Devanagari\"; font-size: 12pt; so-language: hi-IN }a:link { color: #0000ff; text-decoration: underline }</style></p><p></p>',9,'tasio@eio.uva.es','','Seminario del IMUVa, edificio LUCIA','2023-06-28',NULL,'08:30:00','Jornada de Doctorado IMUVa 2023','Universidad de Valladolid',1,'',NULL,'act2462023_JornadasDoctoralesIMUVa2023-resumenes.pdf',NULL,'',1,1),(862,'Ultradifferentiable classes of entire functions',4,'We study classes of ultradifferentiable functions defined in terms of small weight sequences violating standard growth and regularity requirements. First, we show that such classes can be viewed as weighted spaces of entire functions for which the crucial weight is given by the associated weight function of the so-called conjugate weight sequence. Moreover, we generalize results from M. Markin from the so-called small Gevrey-setting to arbitrary convenient families of (small) sequences and show how the corresponding ultradifferentiable function classes can be used to detect boundedness of normal linear operators on Hilbert spaces (associated to an evolution equation problem). Finally, we study the connection between small sequences and the recent notion of dual sequences introduced in the PhD-thesis of Javier Jiménez-Garrido.\r\n\r\nThis is joint work with David N. Nenning from the University of Vienna.',9,'tasio@eio.uva.es','GIR AFA-ECSING','Seminario A121, 1ª planta de la Facultad de Ciencias','2023-07-07',NULL,'11:00:00','Gerhard Schindl','Universidad de Viena (Austria)',1,'',NULL,NULL,'/uploads/carteles/2023/07/2023-07-07(Gerhard-Schindl)Seminario-862.pdf','',1,1),(863,'Model based clustering',10,'The speakers will present the most recent advances in the subject form their own perspective: \r\n- Constrained Model-based clustering (M. Riani, July 10th, 18:00-20:00)\r\n- Decomposition of the total sum of squares for mixtures of linear regressions. (S. Ingrassia, July 12th, 15:00-17:00)\r\n- Parsimonious models according to the Underlying Response Variable approach (R. Rocci, July 13th, 9:00-11:00).\r\nThe course is intended to discuss in an interactive way with doctoral students the theoretical aspects of the different methodologies, as well as  computational issues. The course extends and complements the lectures presented at the AMyC workshop.',9,'tasio@eio.uva.es','G.I.R. PEM','Seminario del Departamento de Estadística e I.O., Facultad de Ciencias','2023-07-10','2023-07-13','18:00:00','Marco Riani, Salvatore Ingrassia, Roberto Rocci','Università di Parma, Università di Catania, Sapienza Università di Roma ',1,'',NULL,NULL,'/uploads/carteles/2023/07/2023-07-10(Marco-Riani,-Salvatore-Ingrassia,-Roberto-Rocci)Curso-de-Doctorado-863.pdf','',1,1),(864,'Computational mathematics, nonlinear evolutionary PDEs, and applications in fluid mechanics and fluid dynamics in porous media',4,'Nonlinear evolutionary PDEs modeling first-order hyperbolic-transport models are relevant on the mathematical foundations in several engineering problems and applied sciences in fluid mechanics and fluid dynamics in porous media. In this talk, we will discuss how new insights on the improved concepts no-flow curves and no-flow surfaces in a Lagragian-Eulereian formulation are key ingredients to address inherent solution properties of hyperbolic-transport models: nonlinearity, wave-breaking phenomena (discontinuous solutions) and unique weak-entropy (shock) solutions. We will also present some recent advances in the design of a new class of semi-discrete positive Lagrangian-Eulerian schemes for solving multidimensional systems of hyperbolic-transport problems supported by rigorous analysis. Numerical experiments in agreement with the numerical analysis will be presented to illustrate the performance of our approach for scalar equations and systems in 1D and 2D.\r\n\r\n',9,'tasio@eio.uva.es','GIR MTANPOEE','Sala de Grados I, Facultad de Ciencias','2023-09-12',NULL,'17:00:00','Eduardo Abreu','IMECC/Unicamp, Brasil',1,'',NULL,NULL,'/uploads/carteles/2023/09/2023-09-12(Eduardo-Abreu)Seminario-864.pdf','',1,1),(865,'Relaxation Methods for non-equilibrium models in conservation laws with application in porous media',4,'Relaxation methods play a pivotal role in modeling various physical phenomena and analyzing the theoretical stability of hyperbolic systems. The concept of relaxation is closely tied to non-equilibrium conditions within a physical system. In such scenarios, relaxation techniques prove invaluable for capturing phenomena that emerge when distinct physical configurations coexist without being in equilibrium with each other.The purpose of this presentation is to provide a comprehensive overview of relaxation methods as applied to hyperbolic systems of conservation laws. Additionally, I will delve into the diverse array of applications that these methods offer, encompassing phenomena like phase transitions and hysteresis. These phenomena involve intricate non-equilibrium dynamics, which are of paramount importance for comprehending the intricate behavior exhibited by these physical processes.',9,'tasio@eio.uva.es','GIR MTANPOEE','Sala de Grados I, Facultad de Ciencias','2023-09-12',NULL,'18:00:00','Wanderson Lambert','Unifal-MG, Brasil',1,'',NULL,NULL,'/uploads/carteles/2023/09/2023-09-12(Wanderson-Lambert)Seminario-865.pdf','',1,1),(866,'aaa',4,'aaaaaaaaaaaaaaaaaaaaaaa\r\naaaaaaaaaaaaaaaaaaaa\r\nsssssssssssssssssssssssssss',110,'diego.ruano@uva.es','gir','sss','2023-09-14',NULL,'00:00:00','nnn','uni uni',2,'',NULL,NULL,'/uploads/carteles/2023/09/2023-09-14(nnn)Seminario-866.pdf','',0,0),(867,'PRUEBA PARA VER LOS CARTELES',4,'lasdklasdklasd\r\nasd<ñasdaskd\r\nasdaskdlñasdlñaskd\r\nñáñálsdlas´d\r\nasñdñásdlasldásd',100,'julio.pastor@uva.es','','CIENCIAS','2023-09-13',NULL,'15:50:00','Yo MISMO','COLUMBIA',2,'',NULL,NULL,'/uploads/carteles/2023/09/2023-09-13(Yo-MISMO)Seminario-867.pdf','',0,0),(868,'ddddddddd sssssssssssss',4,'dddsesdddddddddddd ddddddddddddddddddd ffffffffffffffffffffffffff sssssssssssssssssssssssssssss',110,'diego.ruano@uva.es','gir','lucia','2023-09-15',NULL,'22:02:00','dddddddd sssss','uni uni uni',2,'',NULL,NULL,'/uploads/carteles/2023/09/2023-09-15(dddddddd-sssss)Seminario-868.pdf','',0,0),(869,'Rational first integrals of polynomial foliations and asymptotic approach to bounded negativity on rational surfaces',1,'In this talk, we present some advances to two open problems using techniques of algebraic geometry. \r\n\r\nFirstly, we obtain several necessary conditions for algebraic integrability of a planar polynomial foliation. Moreover, we describe several algorithms to decide on algebraic integrability (under certain conditions) and to compute a rational first integral in the positive case. We use, as a main tool, the extension of the planar foliation to a foliation on the projective plane or a Hirzebruch surface. \r\n\r\nFinally, we prove some results related to the Bounded Negativity conjecture on rational surfaces.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','0000-00-00',NULL,'12:00:00','Elvira Pérez Callejo','Universitat Jaume I',2,'',NULL,NULL,NULL,'',1,1),(870,'Rational first integrals of polynomial foliations and asymptotic approach to bounded negativity on rational surfaces',4,'In this talk, we present some advances to two open problems using techniques of algebraic geometry. \r\n\r\nFirstly, we obtain several necessary conditions for algebraic integrability of a planar polynomial foliation. Moreover, we describe several algorithms to decide on algebraic integrability (under certain conditions) and to compute a rational first integral in the positive case. We use, as a main tool, the extension of the planar foliation to a foliation on the projective plane or a Hirzebruch surface. \r\n\r\nFinally, we prove some results related to the Bounded Negativity conjecture on rational surfaces.\r\n\r\nThis is a joint work with Carlos Galindo and Francisco Monserrat.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2023-10-20',NULL,'12:00:00','Elvira Pérez Callejo','Universitat Jaume I',1,'',NULL,NULL,'/uploads/carteles/2023/10/2023-10-20(Elvira-Perez-Callejo)Seminario-870.pdf','',1,1),(871,'El Transporte Óptimo de Probabilidades. Una visión estadística (muy sesgada)',2,'El problema de Monge-Kantorovich de transporte de medidas es en la actualidad una destacada fuente de inspiración para la consideración de conceptos y herramientas en múltiples áreas de las Matemáticas. Especialmente en la última década, la Mecánica de Fluidos, la Economía, las Ciencias de la Computación, o la Probabilidad y la Estadística, han tenido un desarrollo espectacular a partir de aportaciones basadas en la teoría subyacente, generada sobre todo en los últimos 35 años, en la que nuestro grupo de trabajo ha tenido una actividad notable. En esta charla expondré algunos ejemplos de los resultados e ideas con los que hemos contribuido a la generación de la Teoría y a algunas de sus Aplicaciones. \r\n\r\nLos premios SEIO-Fundación BBVA han distinguido, en su edición de 2023, al artículo \"Distribution and quantile functions, ranks and signs in dimension d: A measure transportation approach\", de Marc Hallin, Eustasio del Barrio, Juan Cuesta-Albertos y Carlos Matrán  (Ann. Statist. 49(2): 1139-1165, 2021, DOI: 10.1214/20-AOS1996) con el reconocimiento como mejor contribución metodológica en Estadística.\r\n',110,'diego.ruano@uva.es','','Salón de grados I, Facultad de Ciencias','2023-10-26',NULL,'17:00:00','Carlos Matrán Bea','Universidad de Valladolid',1,'','act16102023_Foto para IMUVa.jpg',NULL,'/uploads/carteles/2023/10/2023-10-26(Carlos-Matran-Bea)Ateneo-871.pdf','',1,1),(872,'Sobre los Fundamentos Multidisciplinarios de la Inteligencia Artificial Matemática o Metamatemática Cognitivo Computacional',10,'<p>En este curso de tres sesiones brindaremos aspectos esenciales de los tres pilares fundacionales de la Inteligencia Artificial Matemática (IAM) (o Metamatemática Cognitivo-Computacional (MMCC)), la cual busca poder generar agentes artificiales matemáticos universales (AAMU), que puedan asistir a los matemáticos e investigadores afines en su proceso de solución de problemas de base matemática, como pruebas y contraejemplos de conjeturas, desarrollo de nuevas teorías, etc. Éstos 3 pilares fundacionales son: 1) El Programa de los Nuevos Fundamentos Cognitivo-Computacionales de las Matemáticas. 2) El establecimiento y modelamiento de una Taxonomía Global de Mecanismos Metamatemáticos Cognitivo-Computacionales fundamentales de la mente en la creación matemática abstracta. 3) La generación de una ámplia colección de Pseudo-pre-código (o pruebas cognitivo-computacionales), para subsecuentemente generar el pseudo-código y las implementaciones algorítmicas correspondiente con el paradigma de la computación conceptual para desarrollar casos iniciales de AAMU-s. la IAM representa la versión moderna, robusta y multidisciplinaria de la Visión original de Alan Turing de poder simular el trabajo intelectual del matemático computacionalmente.\r\n\r\n</p><p>3 sesiones, del 7 al 9 de noviembre de 2023. En horario de 16:00 a 18:00.<br><a href=\"http://eventos.uva.es/go/IAmatematica\">http://eventos.uva.es/go/IAmatematica</a></p>',110,'diego.ruano@uva.es','GIRS TAAMC y SINGACOM','Aula 214, Aulario Facultad de Ciencias','2023-11-07','2023-11-09','16:00:00','Danny A. J. Gómez-Ramírez','Institución Universitaria Pascual Bravo, Colombia',2,'','act19102023_8ee469_040f7868e2cc48c69cdc6e1ec4159e10~mv2_d_5938_3959_s_4_2.jpg',NULL,'/uploads/carteles/2023/11/2023-11-07(Danny-A.-J.-Gomez-Ramirez)Curso-de-Doctorado-872.pdf','',1,1),(873,'Sobre los Fundamentos Multidisciplinarios de la Inteligencia Artificial Matemática o Metamatemática Cognitivo Computacional',10,'<p>En este curso de tres sesiones brindaremos aspectos esenciales de los tres pilares fundacionales de la Inteligencia Artificial Matemática (IAM) (o Metamatemática Cognitivo-Computacional (MMCC)), la cual busca poder generar agentes artificiales matemáticos universales (AAMU), que puedan asistir a los matemáticos e investigadores afines en su proceso de solución de problemas de base matemática, como pruebas y contraejemplos de conjeturas, desarrollo de nuevas teorías, etc. Éstos 3 pilares fundacionales son: 1) El Programa de los Nuevos Fundamentos Cognitivo-Computacionales de las Matemáticas. 2) El establecimiento y modelamiento de una Taxonomía Global de Mecanismos Metamatemáticos Cognitivo-Computacionales fundamentales de la mente en la creación matemática abstracta. 3) La generación de una ámplia colección de Pseudo-pre-código (o pruebas cognitivo-computacionales), para subsecuentemente generar el pseudo-código y las implementaciones algorítmicas correspondiente con el paradigma de la computación conceptual para desarrollar casos iniciales de AAMU-s. la IAM representa la versión moderna, robusta y multidisciplinaria de la Visión original de Alan Turing de poder simular el trabajo intelectual del matemático computacionalmente.</p><p>3 sesiones, del 7 al 9 de noviembre de 2023. En horario de 16:00 a 18:00</p><p>Información y registro: <a href=\"http://eventos.uva.es/go/IAmatematica\">http://eventos.uva.es/go/IAmatematica</a><span class=\"real_short_url\"></span></p><p><span class=\"real_short_url\"><br></span></p><p><span class=\"real_short_url\"><br></span><br></p>',110,'diego.ruano@uva.es','GIRS TAAMC y SINGACOM','Aula 214, Aulario Facultad de Ciencias','2023-11-07','2023-11-09','16:00:00','Danny A. J. Gómez-Ramírez','Institución Universitaria Pascual Bravo, Colombia',1,'',NULL,NULL,'/uploads/carteles/2023/11/2023-11-07(Danny-A.-J.-Gomez-Ramirez)Curso-de-Doctorado-873.pdf','',1,1),(874,'Ensuring stability in the assessment of algorithmic fairness',2,'Recent studies highlight the effectiveness of Bayesian methods in assessing algorithm performance, particularly in fairness and bias evaluation. We present Uncertainty Matters, a multi-objective uncertainty-aware algorithmic comparison framework. In fairness-focused scenarios, it models sensitive group confusion matrices using Bayesian updates and facilitates joint comparison of performance (e.g., accuracy) and fairness metrics (e.g., true positive rate parity). Our approach works seamlessly with common evaluation methods like K-fold cross-validation, effectively addressing dependencies among the K posterior metric distributions. The integration of correlated information is carried out through a procedure tailored to the classifier\'s complexity. Experiments demonstrate that the insights derived from algorithmic comparisons employing the Uncertainty Matters approach are more informative, reliable, and less influenced by particular data partitions.\r\n\r\nEsta conferencia forma parte de las Actividades de la semana de la Ciencia 2023.',110,'diego.ruano@uva.es','','Salón de Grados I, Facultad de Ciencias','2023-11-16',NULL,'17:00:00','Paula Gordaliza Pastor','Universidad Pública de Navarra',1,'','act5112023_Paula.jpg','act9112023_SemanadelaCiencia2023.pdf','/uploads/carteles/2023/11/2023-11-16(Paula-Gordaliza-Pastor)Ateneo-874.pdf','',1,1),(875,'Powers are easy to avoid',4,'Given a polynomially bounded structure S that defines restricted\r\npower functions,\r\nwe prove that a all intermediate structures between S and the expansion\r\nS^IR of S by all\r\nreal power functions are of the form S^L where L is an intermediate\r\nfield between IR and\r\nthe field of exponents of S. This result can be understood as a\r\npolynomially bounded\r\nversion of a conjecture of van den Dries and Miller.\r\n(Joint work with Gareth Jones, Manchester).',52,'jorge.mozo@uva.es','GIR ECSING','Seminario A-125. Facultad de Ciencias.','2023-11-10',NULL,'13:00:00','Olivier Le Gal','Université de Savoie, Chambéry, Francia.',1,'',NULL,NULL,'/uploads/carteles/2023/11/2023-11-10(Olivier-Le-Gal)Seminario-875.pdf','',1,1),(877,'Resucitando uno de los sueños más grandes y algo olvidados de Alan Turing: La Inteligencia Artificial Matemática',5,'En esta charla describimos los pilares esenciales para rescatar, activar y resucitar teórica y pragmáticamente de entre los muertos ideales teóricos originales de Alan Turing a uno de sus visiones más grandes y fundamentales: la creación de Agentes Artificiales Matemáticos Universales. Mostraremos que más de cien años después de su origen, los avances en el estudio de la mente, de las metamatemáticas, de la física, de las ciencias, de la computación y de la filosofía (entre otras disciplinas) nos han dado muchos elementos para poder reconstruir adecuadamente el proyecto metamatemático más ambicioso de la actualidad: la Materialización de la Inteligencia Artificial Matemática.\r\n\r\nEsta conferencia forma parte de las Actividades de la semana de la Ciencia 2023.',110,'diego.ruano@uva.es','',' Sala de Grados II de la Facultad de Ciencias','2023-11-15',NULL,'17:00:00','Danny A. J. Gómez-Ramírez','Institución Universitaria Pascual Bravo, Colombia',1,'','act9112023_Danny.jpg','act9112023_SemanadelaCiencia2023.pdf','/uploads/carteles/2023/11/2023-11-15(Danny-A.-J.-Gomez-Ramirez)Conferencia-877.pdf','',1,1),(878,'Statistical methods for clustering and measuring inequalities',4,'Different statistical methodologies for clustering and measuring inequalities will be presented. In particular, novel model-based clustering approaches based on ultrametric models for hierarchical dimensionality reduction will be considered. Statistical approaches for measuring inequalities will also be reviewed, along with some applications to measure income inequality and the gender gap.\r\n\r\n',9,'eustasio.delbarrio@uva.es','G.I.R. PEM',' Seminario Dpto. de Estadística e I.O., Facultad de Ciencias','2023-11-23',NULL,'13:00:00','Francesca Greselin y Giorgia Zaccaria','Universidad de Milano-Bicocca',1,'',NULL,NULL,'/uploads/carteles/2023/11/2023-11-23(Francesca-Greselin-y-Giorgia-Zaccaria)Seminario-878.pdf','',1,1),(879,'De grupos, foliaciones y mosaicos.',4,'Los grafos de Cayley son espacios geométricos asociados a grupos finitamente generados. Como grafos, tienen muchas particularidades. Varios autores han estudiado qué grafos, con qué propiedades de auto-similaridad, son casi-isométricos (o \"isométricos a gran escala\") al grafo de Cayley de un grupo. En 2012, Eskin, Fisher y Whyte probaron que ciertos grafos homogéneos y ciertos grupos de Lie no son cuasi-isométricos al grafo de Cayley de un grupo finitamente generado.\r\n\r\nEn una foliación cuyas hojas son densas, la recurrencia de las hojas implica que éstas tienen cierta auto-similaridad a gran escala. Es una pregunta natural, que fue propuesta por G.Hector, si las hojas de una foliación minimal son cuasi-isométricas a grafos de Cayley. \r\n\r\nSe sabe que la respuesta es afirmativa en ciertos casos. Damos una respuesta negativa a la pregunta en general, presentando un contraejemplo que tiene, además, otras características interesantes. \r\n\r\nEste es un trabajo conjunto con Fernando Alcalde Cuesta (U. de Santiago de Compostela) y Álvaro Lozano Rojo (U. de Zaragoza). ',52,'jorge.mozo@uva.es','GIR ECSING','Seminario IMUVA','2023-12-01',NULL,'12:00:00','Matilde Martínez','Universidad de la República (Montevideo, Uruguay)',1,'',NULL,NULL,'/uploads/carteles/2023/12/2023-12-01(Matilde-Martinez)Seminario-879.pdf','',1,1),(880,'Pegada y escisión de ideales tóricos homogéneos.',4,'En esta charla veremos como dos semigrupos afines homogéneos siempre se pueden pegar sumergiéndolos en un espacio de dimensión superior adecuado en el que serán degenerados. Como consecuencia, obtendremos que la suma de los dos ideales tóricos asociados es de nuevo un ideal tórico. Nuestros resultados se pueden aplicar para contestar a problemas relativos a la escisión de ideales tóricos. En particular, veremos que dos ideales tóricos asociados a grafos siempre se pueden obtener como escisión del ideal tórico asociado a otro grafo cuando uno de los dos grafos es bipartito, y como escisión de un ideal tórico asociado a un hipergrafo en general. En ambos casos, la resolución libre minimal graduada del ideal tórico que escinde es el producto tensorial de las resoluciones de los ideales tóricos asociados a los dos grafos de partida.\r\n\r\nEn esta charla se presentarán los resultados obtenidos en una serie de artículos en colaboración con Hema Srinivasan (University of Missouri, USA).',124,'carlosjesus.moreno@uva.es','GIRs SINGACOM y TAAMC','Seminario IMUVA. Edificio LUCIA','2023-12-15',NULL,'12:00:00','Philippe T. Gimenez','Universidad de Valladolid',1,'',NULL,NULL,'/uploads/carteles/2023/12/2023-12-15(Philippe-T.-Gimenez)Seminario-880.pdf','',1,1),(881,'Solar System Small Bodies in J-VAR DR1',4,'The Javalambre VARiability Survey (J-VAR) is a photometric survey that is being carried out with the 0.8m Javalambre Auxiliary Survey Telescope (JAST80), located at the Observatorio Astronómico de Javalambre (OAJ, Teruel). J-VAR is the time-domain extension of the Javalambre-Photometric Local Universe Survey (J-PLUS, Cenarro et al. 2019), carried out in the same telescope. J-VAR uses a sub-set of seven filters from J-PLUS, covering the range from 0.395 up to 0.861 microns, including the g,r,i SDSS filters. The survey has been carried out in non-photometric conditions, from 2019 to the present day. J-VAR includes three main scientific lines: characterization of variable stars, supernovae detection, and small bodies detection and characterization. This presentation will cover this last point. We have analyzed the first data release of J-VAR (101 fields), using the SSOS Pipeline (Mahlke et al. 2019), looking for the Solar System objects detected within the survey images. We have recovered more than 100,000 detections in all the filters, for more than 6,000 Solar System moving objects. We have performed the photometric calibration of the detections relying on secondary calibrations based on already observed J-PLUS fields (Lopéz-SanJuan et al. 2019). At the moment, we are performing several quality checks on the data, aiming to compile the first J-VAR Moving Objects Catalog.',110,'diego.ruano@uva.es','MathPhys','Sala de Grados I, Facultad de Ciencias','2023-12-21',NULL,'13:00:00','David Morate','Centro de Estudios de Física del Cosmos de Aragón',1,'',NULL,NULL,'/uploads/carteles/2023/12/2023-12-21(David-Morate)Seminario-881.pdf','',1,1),(882,'An Applied Mathematician Perspective on some Industrial Applications',4,'We present two experiences gained with interactions with the industry, highlighting the positive as well as the negative feedbacks received. In the first one, a model is set up for the simulation of a bioreactor functioning in a waste treatment plant, taking into account the most important chemical reactions that occur within the tank, as well as the likely presence of microbial communities that help the anaerobic digestion process. The second one concers instead a model of a control device for domestic heating. The problem is investigated through approximation theoretic tools, to detect and suitably react to sudden unexpected events.\r\n',110,'diego.ruano@uva.es','Análisis Numérico de Problemas de Evolución. Aplicaciones en Biomatemática (ANPEAB)','Salón de Grados II, Facultad de Ciencias','2023-12-21',NULL,'13:00:00','Ezio Venturino','Università di Torino, Italia',1,'',NULL,NULL,'/uploads/carteles/2023/12/2023-12-21(Ezio-Venturino)Seminario-882.pdf','',1,1),(883,'Introducción al aprendizaje profundo para el análisis de imágenes: conceptos y aplicación',2,'Esta charla pretende dotar a los participantes de una sólida comprensión de los principios del aprendizaje profundo y su implementación práctica en el análisis de imágenes. La charla tenderá un puente entre los conceptos teóricos y las aplicaciones del mundo real, proporcionando la base para una mayor exploración de este campo en rápida evolución. Empezando por los conceptos fundamentales sobre redes neuronales y deep learning, profundizaremos en el proceso de aprendizaje de las redes neuronales profundas y sus principales bloques constituyentes. A continuación, se presentará la arquitectura básica de las redes neuronales convolucionales (CNN), haciendo hincapié en las principales arquitecturas y mostrando su aplicación a problemas de clasificación de imágenes, detección de objetos y segmentación. La conferencia terminará mostrando ejemplos de proyectos de aplicación reales desarrollados por el Grupo de Sistemas Inteligentes de la Universidad de Valladolid.\r\n',9,'eustasio.delbarrio@uva.es','','Sala de Grados I, Facultad de Ciencias','2024-01-18',NULL,'17:00:00','Aníbal Bregón','Universidad de Valladolid',1,'','act22122023_AnibalBregon.png',NULL,'/uploads/carteles/2024/01/2024-01-18(Anibal-Bregon)Ateneo-883.pdf','',1,1),(884,'Aprendizaje profundo: Métodos de entrenamiento rápido',10,'<p>En este seminario se describe el funcionamiento básico de las redes neuronales no recurrentes y el método más habitual de entrenamiento supervisado de las mismas. Seguidamente se presentan diversas optimizaciones algorítmicas, algunas de las cuales consiguen grandes reducciones en el tiempo de cálculo del entrenamiento. A continuación se detallan varias estrategias para aprovechar eficientemente el soporte hardware existente en los computadores actuales, incluidos los aceleradores diseñados específicamente para inteligencia artificial.</p><p>El curso consta de dos sesiones. El 5 de febrero de 16:30 a 18:00 y el 6 de febrero de 9:30 a 11:00</p><p>Inscripción:<br><a href=\"https://eventos.uva.es/109368/detail/aprendizaje-profundo-metodos-de-entrenamiento-rapido.html\">https://eventos.uva.es/109368/detail/aprendizaje-profundo-metodos-de-entrenamiento-rapido.html</a><br></p>',110,'diego.ruano@uva.es','','Aula 210, Aulario campus Miguel Delibes','2024-02-05',NULL,'16:30:00','José Duato','Real Academia de Ciencias Exactas, Físicas y Naturales',1,'',NULL,NULL,'/uploads/carteles/2024/02/2024-02-05(Jose-Duato)Curso-de-Doctorado-884.pdf','',1,1),(885,'Un nuevo sistema de IA medioambientalmente sostenible',10,'<p>En este seminario, tras mostrar con datos y previsiones el enorme problema que supone el entrenamiento de grandes sistemas de inteligencia artificial, se resumen los grandes avances que ya se han realizado para reducir dicho consumo, mostrando además el escaso margen de mejora que queda. Tras mencionar unas pocas soluciones, se profundiza en una de ellas: el desarrollo de un nuevo sistema de inteligencia artificial y sus métodos de (re)entrenamiento asociados. Este nuevo sistema tiene como característica esencial su capacidad de realizar reentrenamiento incremental, sin que olvide el conocimiento previamente adquirido. Se presentará una descripción intuitiva de porqué este sistema funciona y algunos resultados de evaluación preliminares.</p><p>El curso consta de dos sesiones. El 6 de febrero de 12:00 a 13:30 y de 16:30 a 18:00.</p><p>Inscripción:<br><a href=\"https://eventos.uva.es/109372/detail/un-nuevo-sistema-de-ia-medioambientalmente-sostenible.html\">https://eventos.uva.es/109372/detail/un-nuevo-sistema-de-ia-medioambientalmente-sostenible.html</a></p>',110,'diego.ruano@uva.es','','Aula 210, Aulario campus Miguel Delibes','2024-02-06',NULL,'12:00:00','José Duato','Real Academia de Ciencias Exactas, Físicas y Naturales',1,'',NULL,NULL,'/uploads/carteles/2024/02/2024-02-06(Jose-Duato)Curso-de-Doctorado-885.pdf','',1,1),(886,'Conefrencia de Prueba',5,'\"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.\"',100,'julio.pastor@uva.es','','','0000-00-00',NULL,'00:00:00','Ellos','COLUMBIA',2,'',NULL,NULL,NULL,'',1,0),(888,'Sobre la deformación miniversal de curvas monomiales de intersección completa',4,'Una curva monomial se puede entender como la representación geométrica de un álgebra de semigrupo. Las curvas monomiales intersección completa (CMIC) son uno de los ejemplos más ricos a la hora de estudiar la interacción entre la geometría de las singularidades de curva y la combinatoria del semigrupo de valores definido por el conjunto de las posibles multiplicidades de intersección con la curva. En 1976, Delorme proporcionó una caracterización combinatoria extremadamente útil de semigrupos numéricos cuyo álgebra de semigrupo es una intersección completa (y, por lo tanto, su curva monomial). Esta caracterización ha sido ampliamente utilizada en la literatura de la teoría de semigrupos numéricos y álgebras de semigrupos, pero sorprendentemente no se ha utilizado en el contexto geométrico.\r\n \r\nEl objetivo principal de esta charla es mostrar cómo la caracterización de Delorme puede utilizarse para estudiar la deformación miniversal de una CMIC. La parte principal de la charla se centrará precisamente en esta conexión. Concretamente, mostraremos que podemos proporcionar un sorprendente resultado general de descomposición de una base de la deformación miniversal de cualquier CMIC. Como consecuencia, podemos calcular explícitamente esta base para algunas familias notables de CMIC.\r\n \r\nUn tema importante relacionado con el estudio del espacio base de la deformación miniversal de una curva monomial es su conexión con el espacio de moduli de curvas proyectivas con un semigrupo de Weierstrass dado. En 1974, Pinkham mostró que la dimensión de la parte negativamente graduada de la base de la deformación miniversal está relacionada con la dimensión de dicho espacio de moduli. Si el tiempo lo permite, mostraremos cómo nuestro cálculo explícito de la base de la deformación miniversal proporciona algunas estimaciones para la dimensión del espacio de moduli de las familias notables para las cuales sabemos calcular explícitamente su base.\r\n \r\nLa charla se basa en un trabajo conjunto con J.J. Moyano Fernández.',124,'carlosjesus.moreno@uva.es','GIR SINGACOM','Seminario IMUVA. Edificio LUCIA','2024-03-15',NULL,'12:00:00','Patricio Almirón','Universidad de Granada',1,'',NULL,NULL,'/uploads/carteles/2024/03/2024-03-15(Patricio-Almiron)Seminario-888.pdf','',1,1),(889,'SIM 123. Distribuciones no integrables y foliaciones Legendrianas.',4,'Dada una distribución holomorfa no integrable, en esta charla estudiamos las foliaciones holomorfas que son tangentes a la distribución. El estudio de objetos \"tangentes\" a una distribución no integrable ha sido bastante desarrollado en categoría C-infinito, pero muy poco explorado en categoría holomorfa. Como corolario de nuestro estudio, mostramos que las distribuciones de contacto canónicas en espacios proyectivos complejos admiten variedades Legendrianas abiertas, inyectivamente inmersas y densas en todo el espacio.',52,'jorge.mozo@uva.es','GIR ECSING','Seminario A-125. Facultad de Ciencias.','2024-01-17',NULL,'16:30:00','Rudy Rosas','Pontificia Universidad Católica del Perú',1,'',NULL,NULL,'/uploads/carteles/2024/01/2024-01-17(Rudy-Rosas)Seminario-889.pdf','',1,1),(890,'SIM 123. Estructuras de contacto y foliaciones.',4,'Sea $M$ una variedad de dimensión 3 real. Una forma de contacto es una 1-forma $\\theta$ tal que $\\theta \\wedge \\theta = Vol(M )$.\r\nSi $M = \\partial U$ donde $U$ es una superficie compleja y $F = F\\omega$ es una foliación holomorfa transversal a $\\partial U$ , la parte real e imaginaria de $\\omega \\mid \\partial U$ definen estructuras de contacto en $M = \\partial U$ .\r\nEn esta charla trataremos de dar algunas ideas con el objetivo de explotar esta relación en problemas de foliaciones.',52,'jorge.mozo@uva.es','GIR ECSING','Seminario A-125. Facultad de Ciencias.','2024-01-17',NULL,'18:00:00','Omegar Calvo Andrade','Centro de Investigación en Matemáticas - CIMAT. Guanajuato, México.',1,'',NULL,NULL,'/uploads/carteles/2024/01/2024-01-17(Omegar-Calvo-Andrade)Seminario-890.pdf','',1,1),(891,'Problemas de secuenciación de máquinas con necesidad de recursos adicionales',4,'En esta charla se hablará de algunos de los problemas más estudiados de secuenciación de máquinas con una la necesidad de recursos adicionales limitados. La consideración de recursos adicionales agrega otra capa de complejidad al problema, obligando a considerar otros enfoques para resolver los problemas. Además del enfoque más estudiado en el que se tiene como objetivo la minimización del tiempo de completación de la secuencia, los problemas se abordan con enfoque multi-objetivo, proponiendo algoritmos para resolverlos.',9,'eustasio.delbarrio@uva.es','Departamento de Estadística e Investigación Operativa','Seminario del Departamento de Estadística e Investigación Operativa','2024-01-30',NULL,'12:00:00','Juan Camilo Yepes Borrero','Universidad Politécnica de Valencia',1,'',NULL,NULL,'/uploads/carteles/2024/01/2024-01-30(Juan-Camilo-Yepes-Borrero)Seminario-891.pdf','',1,1),(892,'SIM 124. Singularidades tipo producto de foliaciones holomorfas',4,'Estudiamos cierto tipo de componentes singulares con estructura transversal constante, como generalización de las singularidades de tipo Kupka. La existencia de estas componentes, que no sean de tipo Kupka, genera ciertas obstrucciones a nivel cohomológico. En particular, estas componentes son irrealizables en espacios proyectivos.',52,'jorge.mozo@uva.es','GIR ECSING - AFA','Aula A-125. Facultad de Ciencias.','2024-02-02',NULL,'11:30:00','Rudy Rosas','Pontificia Universidad Católica del Perú',1,'',NULL,NULL,'/uploads/carteles/2024/02/2024-02-02(Rudy-Rosas)Seminario-892.pdf','',1,1),(893,'SIM 124. Formal solutions to singularity perturbed q-difference equations.',4,'We establish the existence, uniqueness and q-Gevrey character of formal power series solutions of q-analogues of analytic doubly-singular equations. Using a new family of Nagumo norms adapted for q-differences we find new types of optimal divergence associated with these problems. We also provide some examples to illustrate our results. This is a joint work with S. A. Carrillo.\r\n\r\n',52,'jorge.mozo@uva.es','GIR ECSING - AFA','Seminario A-125. Facultad de Ciencias.','2024-02-02',NULL,'12:30:00','Alberto Lastra','Universidad de Alcalá.',1,'',NULL,NULL,'/uploads/carteles/2024/02/2024-02-02(Alberto-Lastra)Seminario-893.pdf','',1,1),(894,'Dinámica fraccionaria',2,'Se presentarán algunos aspectos básicos del cálculo fraccionario y de las ecuaciones diferenciales de orden no entero. Se introducirán también algunos modelos de procesos reales incluyendo modelos epidemiológicos.\r\n\r\nPara ciertas ecuaciones muy simples aparecen problemas y situaciones originales que requieren nuevas ideas y métodos. \r\n\r\nReferencias:\r\n•	S. Abbas, M. Benchohra, J.E. Lazreg, J.J. Nieto, Y. Zhou, Fractional Differential Equations and Inclusions: Classical and Advanced Topics. Series on Analysis, Applications and Computation, World Scientific, 2023.\r\n•	I. Area, F.J.  Fernández, J.J. Nieto, F.A.F. Tojo, Concept and solution of digital twin based on a Stieltjes differential equation. Mathematical Methods in the Applied Sciences 45 (2022), pp. 7451-7465.\r\n•	M. Aguiar, C.M.A.  Pinto, J.J. Nieto, R.M. Ribeiro, New trends on mathematical modeling and simulation of biological systems, Chaos, Solitons and Fractals 172 (2023), 113568.\r\n•	J.L. Wei, G.C. Wu, B.Q. Liu, J.J. Nieto, An optimal neural network design for fractional deep learning of logistic growth. Neural Computing and Applications 35 (2023), 10837-10846.\r\n',110,'diego.ruano@uva.es','','Salón de Grados I, Facultad de Ciencias','2024-02-15',NULL,'17:00:00','Juan J. Nieto','CITMAga-Centro de Investigación y Tecnología Matemática de Galicia',1,'','act822024_foto_JuanJNieto.jpeg',NULL,'/uploads/carteles/2024/02/2024-02-15(Juan-J.-Nieto)Ateneo-894.pdf','',1,1),(895,'Introducción a la teoría de categorías',10,'<p>El objetivo de este curso es dar una introducción a la teoría de categorías.</p><p>Nuestra idea es desarrollar con el máximo detalle posible los contenidos siguientes:\r\n</p><p>1. Categorías, funtores, transformaciones naturales, objetos iniciales y terminales, morfismos mónicos y épicos.</p><p>2. Construcciones: categoría opuesta, categoría de funtores, producto de categorías, categorías coma, categorías libres, y categorías cociente.</p><p>3. Propiedades universales, Lema de Yoneda, límites y colímites.</p><p>4. Adjunciones y equivalencias de categorías.</p><p>5. El Teorema del funtor adjunto de Freyd.</p><p>Las sesiones tendrán lugar los días 15, 20, 21, 22, 27, 28 y 29 de Febrero de 2024 en el aula A125 de la Facultad de Ciencias en horario de 12:00 a 14:00.</p><p>Más información y registro:<br><a href=\"https://eventos.uva.es/111399/detail/introduccion-a-la-teoria-de-categorias.html\">https://eventos.uva.es/111399/detail/introduccion-a-la-teoria-de-categorias.html</a></p>',110,'diego.ruano@uva.es','GIR TAAMC','Aula A125 de la Facultad de Ciencias','2024-02-15','2024-02-29','12:00:00','Alberto Fernández Boix ','Universidad de Valladolid, IMUVa',1,'',NULL,NULL,'/uploads/carteles/2024/02/2024-02-15(Alberto-Fernandez-Boix-)Curso-de-Doctorado-895.pdf','',1,1),(896,'Nuevas técnicas de formación de imágenes: una visión moderna de la ecuación Ax = b',2,'Posiblemente no existe una tecnología que haya tenido un impacto más importante en nuestras vidas que la de las imágenes médicas y, posiblemente, no haya una tecnología donde el papel de las matemáticas sea tan profundo y tan poco apreciado. En el centro de cualquier modalidad de imagen hay un modelo matemático que modela los datos y un algoritmo que reconstruye la imagen a partir de ellos, y todo ello es poco conocido. Muchos de estos modelos son lineales y, por tanto, se pueden describir a través de la ecuación $Ax = b$. Preguntas interesantes que las Matemáticas pueden responder son: ¿puedo obtener una reconstrucción exacta?, ¿cuántas medidas necesito para ello?, ¿cómo puedo hacerlo eficientemente?, y ¿cómo de robustos son los algoritmos si las medidas tienen ruido? Intentaré responder a algunas de estas preguntas desde un punto de vista moderno que considera un nuevo espacio donde las imágenes tienen una representación “sparse”, es decir, como un vector con la mayoría de sus componentes iguales a cero.',110,'diego.ruano@uva.es','','Salón de grados I, Facultad de Ciencias','2024-03-21',NULL,'17:00:00','Miguel Ángel Moscoso Castro','Universidad Carlos III de Madrid',1,'','act2822024_Moscoso.jpg',NULL,'/uploads/carteles/2024/03/2024-03-21(Miguel-Angel-Moscoso-Castro)Ateneo-896.pdf','',1,1),(897,'SIM 125. Construction of a basis of Kahler differentials for generic plane branches in an equisingularity class',4,'Let $C$ be a fixed equisingularity class of irreducible germs of complex analytic plane curves. We compute a basis of the $\\mathbb{C}[[x]]$-module of Kahler differentials for generic $Gamma\\in C$. Our method is algorithmic.\r\n\r\nAs an application, we give an alternative proof for a formula of Genzmer, that provides the dimension of the moduli of analytic classes in the equisingularity class of $\\Gamma$.\r\n\r\nThis is a joint work with Pedro Fortuny Ayuso.',52,'jorge.mozo@uva.es','GIR ECSING','Seminario A-125. Facultad de Ciencias.','2024-03-22',NULL,'11:00:00','Javier Ribón Herguedas','Universidade Federal Fluminense',1,'',NULL,NULL,'/uploads/carteles/2024/03/2024-03-22(Javier-Ribon-Herguedas)Seminario-897.pdf','',1,1),(898,'SIM 125. Bases de Saito para cúspides',4,'Se calculan las bases de Saito para cúspides en términos del semigrupo de valores diferenciales. Se introducen nuevos invariantes analíticos para estos objetos.',52,'jorge.mozo@uva.es','GIR ECSING','Seminario A-125. Facultad de Ciencias.','2024-03-22',NULL,'12:10:00','David Senovilla','Universidad de Cantabria.',1,'',NULL,NULL,'/uploads/carteles/2024/03/2024-03-22(David-Senovilla)Seminario-898.pdf','',1,1),(899,'Old and new spectral problems for the prolate spheroidal equation. An unified analytical approach. Application to the Connes-Moscovici spectrum which matches the zeroes of zeta',4,'A joint work with Françoise Richard-Jung and Jean Thomann. The main actor in the play is the prolate spheroidal operator (of zero order) $W_{\\Lambda}= - \\frac{d}{dx} (\\Lambda^2-x^2) \\frac{d}{dx} +(2\\pi \\Lambda x)^2$; $\\Lambda$ is a parameter (bandwith parameter). It is real in a first step and after complex; $W_{\\Lambda}$ is formally self-adjoint. The spheroidal operators appeared in the study of the Helmoltz equation $(\\Lambda+ k^2)\\Psi = 0$ on a spheroid (prolate resp. oblate). The prolate spheroid is a rugby ball. There is a separation of variables in prolate (resp. oblate) coordinates. The solutions of angular and radial equations are the spheroidal functions. They generalize the spherical functions (football ball).\r\n \r\nI will recall some results in signal theory due to Slepian and all in Bell Labs 1960-1965. Signals cannot be perfectly localized in time and frequency and there is a problem in communication of signals : limited time, limited range of frequencies. This lead to the study of an integral convolution operator $Q_{\\Lambda}$ with a sine cardinal kernel. Its first eigenvalues are very near of 1 and afterwards they fall abruptly and became very small. Then the study of eigenfunctions become difficult. Slepian and all made a remarkable discovery : the operator $Q_{\\Lambda}$  commutes with the prolate differential operator $W_{\\Lambda}$. Then the eigenfunctions are the prolate spheroidal functions and it is possible to use a singular version of the Sturm-Liouville theory on $[-\\Lambda, \\Lambda ]$ for their study. Slepian called this \"the lucky accident” and said that it remains a mystery. I will try to explain the origin of the miracle.\r\n \r\nI will present a new theory of spectra of rational linear second order operators elaborated with Françoise and Jean. We choose singular points as boundaries and we define boundary conditions. in the regular and irregular cases.',110,'diego.ruano@uva.es','GIR ECSING','Seminario IMUVA','2024-04-12',NULL,'11:00:00','Jean-Pierre Ramis','Académie des Sciences (Institut de France) y  Institut de Mathématiques de Toulouse',1,'',NULL,'act342024_Valladolid-Abstract.pdf','/uploads/carteles/2024/04/2024-04-12(Jean-Pierre-Ramis)Seminario-899.pdf','',1,1),(900,'Continuity equation: non-parametric inference and weather prediction',4,'The continuity equation models the movement of d-dimensional particles following a vector field $v_t(x)$. Many natural phenomena can be described in this setting, like the meteorological ones. In this talk, we are going to discuss a kernel based estimator for the velocity field and also a new metric inspired on Optimal Transport theory in the context of weather prediction.',9,'eustasio.delbarrio@uva.es','G.I.R. PEM','Seminario del Departamento de Estadística e I. O.','2024-04-16',NULL,'13:00:00','Adriana L. Monteiro','Instituto de Matemática Pura e Aplicada, Brasil',1,'',NULL,NULL,'/uploads/carteles/2024/04/2024-04-16(Adriana-L.-Monteiro)Seminario-900.pdf','',1,1),(901,'Geometría para catar alimentos',2,'El análisis sensorial es una rama de la ciencia que resulta crucial a la hora de desarrollar productos adaptados al gusto de los consumidores. Y, como no podía ser de otra forma, las matemáticas juegan un papel importante en ese proceso. En particular, esta charla mostrará cómo analizar parecidos y diferencias utilizando tan solo herramientas geométricas sencillas.',110,'diego.ruano@uva.es','','Salón de Grados I, Facultad de Ciencias','2024-04-18',NULL,'17:00:00','David Orden Martín','Universidad de Alcalá de Henares',1,'','act842024_Foto David Orden horizontal2.jpg','act842024_Foto David Orden horizontal2.jpg','/uploads/carteles/2024/04/2024-04-18(David-Orden-Martin)Ateneo-901.pdf','',1,1),(902,'Generalized orbifold Euler characteristics and their properties',4,'Orbifold Euler characteristic was introduced by physisists in 1985 (L.Dixon, J.A.Harvey, C.Vafa, E.Witten: Strings on orbifolds) for global quotients, that is for pairs $(X,G)$ consisting of a topological space $X$ (a manifold in their considerations) and an action of a finite group $G$ on it. It can be defined by two equivalent equations $$\\chi^{\\rm orb}(X,G)=\\frac{1}{\\vert G\\vert}  \\sum_{{(g_0,g_1)\\in G^2:}\\atop{g_0g_1=g_1g_0}}\\chi(X^{\\langle g_0,g_1\\rangle}) =\\sum_{[g]\\in {{\\rm Conj\\,}G}} \\chi(X^{\\langle g\\rangle}/C_G(g))\\,,$$ The fact that this invariant was called {\\em orbifold} (and in a paper of F.Hirzebruch, H.H\\\"{o}fer even the Euler number of an orbifoid), means, of course, that the authors understood that it was an invariant not only of $G$-spaces, but of orbifolds. However, a formal definition for orbifolds themselves was first given in 1996 (Sh.Sh.Roan.). (The fact that for an orbifold being a full quotient $X/G$, this definition gives $\\chi^{\\rm orb}(X,G)$ required a separate proof.) Among some properties of the orbifold Euler characteristic one has an analogue of the Macdonald equation: an equation for the generating series of the (usual) Euler characteristics of the symmetric products of a topological space. One has generalizations of the notion of the orbifold Euler characteristic corresponding to (arbitrary) finitely generated groups. (For these groups being free abelian they were essentially defined in a paper of M.Atiyah and G.Segal, 1989.) \r\n\r\nWe shall discuss how one property of these invariants (the so called induction property introduced in a paper by S.M.Gusein-Zade, I.Luengo, and A.Melle-Hern\\\'andez) permits to reduce proofs of (some) other their properties to verification on one point sets (with the (only) action of an (arbitrary) finite group). Such verifications lead to purely algebraic problems.',110,'diego.ruano@uva.es','GIR SINGACOM','Seminario IMUVa, Edificio LUCIA','2024-04-19',NULL,'12:00:00','Sabir M. Gusein-Zade','Moscow State University, Rusia',1,'',NULL,NULL,'/uploads/carteles/2024/04/2024-04-19(Sabir-M.-Gusein-Zade)Seminario-902.pdf','',1,1),(903,'SIM126: Approximation results of Artin-Tougeron-type for general filtrations and for rings of smooth functions',4,'Various versions of Artin approximation are widely used in Algebraic/Analytic Geometry, Commutative Algebra and Singularity Theory; traditionally, the approximation statements were restricted to Noetherian rings and to filtrations by powers of ideals. The goal of this talk is to explain how to extend some of the classical approximation results both for general filtrations and for rings of smooth functions; for instance, our statements allow some immediate applications of Artin approximation to the study of non-isolated singularities of maps and schemes. \r\nThe content of this talk is based on joint work with Genrich Belitskii and Dmitry Kerner (Ben Gurion University of the Negev, Beer Sheva, Israel).',77,'jsanzg@am.uva.es','GIR ECSING-AFA','Seminario A125, Facultad de Ciencias','2024-04-19',NULL,'10:00:00','Alberto Fernández Boix','Universidad de Valladolid-IMUVA',1,'',NULL,NULL,'/uploads/carteles/2024/04/2024-04-19(Alberto-Fernandez-Boix)Seminario-903.pdf','',1,1),(904,'SIM126: Interpolation of derivatives and ultradifferentiable regularity',4,'Interpolation results are classical problems in Mathematics. In this talk we are concerned with the following basic question: When given an infinitely differentiable function let us assume that some derivatives admit a precise growth control; i.e. information is available on a prescribed subsequence of all integers. Can then this lacunary information be extended to all derivatives? We are interested in this problem within the so-called ultradifferentiable setting; i.e. when the given derivatives are bounded by a fixed weight sequence, weight function, or even weight matrix. In order to proceed it is natural to study and understand the interplay of the weights and the lacunary sequence on which information is available and, finally, to involve suitable interpolation inequalities. The most prominent example is the classical “Gorny-Cartan-inequality”. We treat this problem by reviewing some more interpolation inequalities for derivatives and work within the general weight matrix setting to obtain results for weight sequences and functions automatically. We also deal with some nonstandard cases; e.g. Gelfand-Shilov-type classes.\r\nThis is joint work with Armin Rainer (University of Vienna).',77,'jsanzg@am.uva.es','GIR ECSING-AFA','Seminario A125, Facultad de Ciencias','2024-04-19',NULL,'11:00:00','Gerhard Schindl','University of Vienna',1,'',NULL,NULL,'/uploads/carteles/2024/04/2024-04-19(Gerhard-Schindl)Seminario-904.pdf','',1,1);

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