• Engaños ópticos y artificios perspectivos 

      López Vílchez, Inmaculada (2014-03-27)
      Título de la conferencia: "Engaños ópticos y artificios perspectivos" La conferencia incide en las relaciones que las disciplinas del Arte y la Ciencia han mantenido históricamente a través de la Geometría, tomando como ...
    • 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 ...
    • 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 ...
    • Extremal elements in Lie Algebras 

      Cohen, Arjeh M. (2014-12-10)
      The main result discussed in this lecture is an elementary proof of the following theorem: If L is a simple Lie algebra over F of characteristic distinct from 2 and 3 having an extremal element that is not a sandwich, ...
    • 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 ...
    • 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 ...
    • Geometric assumptions and variational tools in Lorentzian geometry 

      Candela, Anna Maria (2014-10-02)
      During the past years there has been a considerable amount of research related to the problem of geodesic connectedness of Lorentzian manifolds. In particular, some geometric sufficient conditions have been introduced so ...
    • Geometries from structurable algebras and inner ideals 

      Meulewaeter, Jeroen (2020-02-12)
      Se estudian ciertos tipos de geometrias en algebras estructurables via sus ideales internos abelianos.
    • A gravitational collapse singularity theorem that improves Penrose's 

      Minguzzi, Ettore (2020-03-09)
      The global hyperbolicity assumption present in gravitational collapse singularity theorems is in tension with the quantum mechanical phenomenon of black hole evaporation. In this work I show that the causality conditions ...
    • 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 ...
    • Grupos p-locales finitos y grupos de cohomología 

      Garaialde Ocaña, Oihana (2013-12-10)
      Definimos ciertos espacios topológicos llamados grupos p-locales finitos e introducimos una sucesión espectral que calcula su cohomología en ciertos casos, incluyendo algunos grupos p-locales finitos "exóticos". Presentaremos ...
    • 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.
    • Homotopy nilpotency and co-nilpotency of spaces 

      Golasinski, Marek (2020-03-11)
      We review known and state some new results on homotopy nilpotency and co-nilpotency of spaces. Next, we take up the systematic study of homotopy nilpotency of homogenous spaces G/K for a Lie group G and its closed subgroup ...
    • 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 ...
    • 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) ...
    • Jordan-lie inner ideals of finite dimensional associative algebras 

      Baranov, Alexander (2017-06-15)
      Any associative ring A becomes a Lie ring A(−) under [x, y] = xy−yx. Let A(1) = [A, A] be the derived subalgebra of A(−) and let Z be its center. In the early 1950s Herstein initiated a study of Lie ideals of A in case ...
    • KV. Cohomology and some applications 

      Ferdinand, Ngakeu (2020-02-24)
      Two versions of the KV-cohomology are presented and some algebraic and geometrical applications are given. We will see some applications to stochastic manifold. As a consequence, we can apply these ideas in Lorentzian ...
    • L-InfinityAlgebras, Cohomology and M-Theory 

      Huerta, John (2017-05-12)
      In this introduction for topologists, we explain the role that extensions of L-infinity algebras by taking homotopy fibers plays in physics. This first appeared with the work of physicists D'Auria and Fre in 1982, ...
    • 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 ...
    • Leavitt Path algebras via partial skew ring theory 

      Gonçalves, Daniel (2018-04-17)
      We will introduce the theory or partial actions of groups and their associated algebras. As an example we will realize the Leavitt path algebra associated with a graph as a partial skew group ring. To finish, we will ...