Mostrando ítems 21-40 de 54

    • G2 and the rolling ball 

      Huerta, John (2017-05-09)
      Understanding the exceptional Lie groups as the symmetry groups of simpler objects is a long-standing program in mathematics. Here, we explore one famous realization of the smallest exceptional Lie group, G2: Its Lie ...
    • Recent results on (p,q)-Laplacian type equations 

      Bartolo, Rosella (2017-05-09)
      Start ing from a new sum decomposit ion of W1,p(RN ) ∩W1,q(RN ) and using a variat ional approach, we invest igate the existence of mult ipleweak solut ions of a (p, q)–Laplacian equat ion on RN , for 1 < q < p < N , ...
    • Modelos no asociativos en genética de poblaciones 

      Paniello Alastruey, Irene (2017-05-04)
      El objetivo de esta charla es, en primer lugar, dar una visi on general de algunos de los modelos no asociativos m as com unmente utilizados en gen etica de poblaciones para, a continuaci on, describir las llamadas co ...
    • On intersections of ideals of Leavitt path algebras 

      Kanuni Er, Muge (2017-04-04)
      During the 2015 CIMPA Research School in Turkey on “Leavitt path algebras and graph C*-algebras”, Astrid an Huef raised the question whether the statement: For a given graph E, every (closed) ideal I of C*(E) is ...
    • Factorization of Ideals in Leavitt Path algebras 

      Rangaswamy, Kulumani (2017-04-04)
      After pointing out how ideals in a Leavitt path algebra L of a graph E behave like ideals in a commutative ring, we shall consider the question of factorizing an arbitrary ideal I as a product of finitely many special type ...
    • Ordenes Locales en Álgebras de Jordan 

      Montaner Frutos, Fernando (2017-02-16)
      La noción de orden local procede de los trabajos de Fountain y Gould en el caso de álgebras asociativas, y ha sido adaptada a álgebras y otros sistemas de Jordan por varios autores. En esta charla, la fuente original ...
    • Leavitt path algebras and the IBN property 

      Kanuni, Muge (2016-12-21)
      A ring has invariant basis number property (IBN) if any two bases of a finitely generated free module have the same number of elements. In 1960's Leavitt constructed examples of rings R without IBN, more precisely for any ...
    • Estructura de anillo de la cohomología de Hoschild de álgebras de Sridharan 

      D'Alesio, Sofía (2016-10-07)
      Sridharan probó en [Sri61] que toda álgebra filtrada cuyo graduado asociado es S(V) para algún espacio vectorial V, está determinada salvo isomorfismo por una estructura de Lie sobre V y la clase de cohomología de un ...
    • Ondas Gravitacionales: el amanecer de una nueva era 

      Martín Senovilla, José María (2016-09-13)
      Después de una larga espera de decenas de años estamos de enhorabuena: el 14 de Septiembre de 2015 una colaboración científica internacional (LIGO/VIRGO) logró detectar, en sus interferómetros más avanzados en funcionamiento, ...
    • Reconstruction of graded groupoids from graded Steinberg algebras 

      Ara, Pere (2016-05-19)
      We show how to reconstruct a graded ample Hausdorff groupoid with topologically principal neutrally-graded component from the ring structure of its graded Steinberg algebra over any commutative integral domain with 1, ...
    • Homeomorphism groups of the cube and other n-manifolds 

      Rolfsen, Dale; Calegari, Danny (2016-04-25)
      In this talk, the structure of the homeomorphism group of the cube is presented. Applications to the homeomorphism groups of other n-manifolds are also treated.
    • Connectivity by geodesics on a class of globally hyperbolic spacetimes 

      Bartolo, Rosella (2016-04-14)
      During the past years there has been a considerable amount of research related to the problem of geodesic connectedness of Lorentzian manifolds. This topic has wide applications in Physics, but for mathematicians its ...
    • C*-algebras associated to Boolean dynamical systems 

      Pardo Espino, Enrique (2016-03-15)
      The goal of this talk is to present the C*-algebra $C^*(\mathcal{B}, \mathcal{L}, \theta)$ of a Boolean dynamical system $(\mathcal{B}, \mathcal{L}, \theta)$, that generalizes the $C^*$-algebra associated to a labelled ...
    • Groupoids and Steinberg Algebras 

      Clark, Lisa Orloff (2016-03-15)
      A groupoid is a generalisation of group in which composition is only partially defined. In first half of this talk, I will give an overview of groupoid theory and show how groupoids provide a unifying model for a number ...
    • Extensión global de campos vectoriales locales en espacios Pseudo-Finsler I, II. 

      Herrera Fernández, Jónatan (2016-02-24)
      El problema de extensión global de campos locales (Killing, conformes, etc.) en variedades Pseudo-Riemannianas aparece naturalmente en múltiples contextos. Por ejemplo, es un ingrediente esencial en la prueba de que el ...
    • Complejidad topológica abstracta en categorías de modelos sobre espacios topológicos 

      Moraschini, Marco (2015-10-19)
      En esta charla vamos a estudiar el comportamiento de la complejidad topológica abstracta en diferenties estructuras de modelos sobre los espacios topológicos. En particular, vamos a estudiar bajo que hipótesis el valor de ...
    • Infinite-Dimensional Diagonalization 

      Mesyan, Zachary; Reyes, Manuel; Iovanov, Miodrag (2015-05-29)
      Let V be an arbitrary vector space over a field K, and let End(V) be the ring of all K-linear transformations of V. We characterize the diagonalizable linear transformations in End(V), as well as the (simultaneously) ...
    • Incidence algebras. Overview 

      Muge, Kanuni (2015-05-13)
      In his celebrated paper of 1964, "On the foundations of combinatorial theory I: Theory of Möbius Functions" Gian-Carlo Rota defined an incidence algebra as a tool for solving combinatorial problems. Incidence algebra is a ...
    • Perspectiva. Espacios construidos y espacios representados. 

      López Vílchez., Inmaculada (2015-04-24)
      La conferencia presentará los fundamentos científicos de la perspectiva, conocida tradicionalmente como “la ciencia del arte”, con la mención de los que han sido considerados sus principales referentes en el contexto ...
    • Maximal surfaces and graphs in a Lorentzian product -RxM 

      Lima Jr., Eraldo A. (2015-02-26)
      We will present several results for maximal surfaces in a Lorentzian product manifold -R×M. The main purpose is to characterize the slices as complete maximal surfaces satisfying a comparison between the growth of lenght ...