AGT - Conferencias Científicas
Envíos recientes
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Avances en la conjetura de Quillen.
(2023)El estudio de los complejos de p-subgrupos comenzó en los años 70 motivado por trabajos de K. Brown y D. Quillen, y guarda conexión con cohomología equivariante "módulo el primo p", teoría de grupos, incluyendo la clasificación ... -
Cálculos en cohomología de grupos finitos.
(2023)Sea p un número primo. En esta charla daremos una introducción a la cohomología de p-grupos finitos sobre el cuerpo de p elementos y descubriremos lo difícil que puede resultar su cálculo. -
The kernel of the Gysin homomorphism for Chow groups of zero cycles.
(2023)Let S be a smooth projective surface over a field k, and let C be a smooth hyperplane section of S. For a closed embedding of S into a projective space P consider the linear system Σ of hyperplane sections and the ... -
Groupoids in analysis and algebra.
(2023)Groupoid algebras are studied in both analytic and algebraic contexts. In analysis, groupoid C*-algebras play a fundamental role in the theory and include many important subclasses. Steinberg algebras are their purely ... -
The lattice of ideals in the Steinberg algebra of a strongly effective groupoid
(2023-07-05)A topological groupoid is generalization of topological group where the binary operation is only partially defined. Ample groupoids are a special class of topological groupoid that have an especially well behaved topology. ... -
Más allá de Sylow.
(2023)Más allá de Sylow, están Hall y Carter con sus correspondientes subgrupos, conocidos por sus nombres respectivos. Y más allá está Gaschütz, quien de forma sorprendente dio una visión conjunta de todos ellos con sus envolturas ... -
Generalized Cohomological Field Theories in the Higher Order Formalism
(2023)In the classical Batalin—Vilkovisky formalism, the BV operator is a differential operator of order two with respect to a commutative product; in the differential graded setting, it is known that if the BV operator is ... -
Las matemáticas de la relatividad general y el teorema del Nobel de física 2020.
(2023)Conferencia divulgativa sobre las Matemáticas subyacentes a la Teoría de Relatividad y al premio Nobel de Física 2020 -
Massey products and higher operations
(2023-01-25)It was long believed that Massey products in the cohomology of a differential graded associative algebra were determined by the higher operations on a minimal A-infinity model. This was disproved by Buijs, Moreno-Fernández, ... -
The Talented monoid of a graph and its connections with the Leavitt path algebra
(2022)In this talk, we introduce an algebraic entity arising from a directed graph - the talented monoid. The talented monoid has an interesting relationship with the Leavitt path algebra. In fact, the group completion of the ... -
Gradings on classical Lie algebras via sesquilinear forms over graded-division algebras
(2022)En esta charla de aproximadamente una hora el profesor Dr. Mikhail V. Kochetov nos introduce en las últimas técnicas usadas para clasificar graduaciones sobre ciertas álgebras de Lie clásicas. Técnicas usadas en su monografía ... -
Categorías tensoriales, álgebras y superálgebras
(2022)After reviewing the basic definitions of tensor categories and the notion of semisimplification of symmetric tensor categories, it will be shown how the semisimplification of the category of representations of the cyclic ... -
Homotopy nilpotency and co-nilpotency of spaces
(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 ... -
Topological restrictions in Lorentzian geometry: a survey
(2020-03-09)It is well know that globally hyperbolic solutions (M,g) of the Einstein field equations in general relativity may have initial data Cauchy hypersurfaces with any topology. However, some restrictions on the fundamental ... -
A gravitational collapse singularity theorem that improves Penrose's
(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 ... -
KV. Cohomology and some applications
(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 ... -
Subvariedades atrapadas en el cono de luz
(2020-02-14)El concepto de superficie atrapada fue formulado orginalmente por Penrose en 1965 para el caso de superficies espaciales bidimensionales en espaciotiempos tetradimensionales, en términos de los signos o de la anulación de ... -
The topology and geometry of the space of null geodesics
(2020-02-14)This talk will provide a general introduction to the space of null geodesics. I will begin with a discussion of the case of Minkowski space, a special case with a great deal of structure. After this, I will move on ... -
Geometries from structurable algebras and inner ideals
(2020-02-12)Se estudian ciertos tipos de geometrias en algebras estructurables via sus ideales internos abelianos. -
Cuantización geométrica y Geometría de Lorentz
(2019-10-07)En esta charla el autor presenta el problema de la inexistencia de una medida de Borel localmente finita que sea preservada por los flujos Hamiltonianos asociados a un conjunto restringido de funciones, para la forma ...