Listar AGT - Conferencias Científicas por fecha de publicación
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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 ... -
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. -
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 ... -
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 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. ... -
Entropy of local homeomorphisms with applications to subshifts arising from infinite graphs.
(2024)In this talk, we introduce topological entropy for dynamical systems generated by a single local homeomorphism (Deaconu-Renault systems). More precisely, we propose and compare entropy definitions via covers and via separated ... -
Conjugacy of subshifts via the associated algebras.
(2024)In this talk, we present the recently defined unital algebra associated with a one-sided subshift over an arbitrary alphabet. For finite alphabets, the C*-algebraic version of this algebra coincides with the C*-algebra ... -
Spectrum of the Laplacian on homogeneous spaces.
(2024)We will start with an introduction and stating general results on the spectral properties of the Laplacian before we investigate the restriction to manifolds which are symmetric. We consider the difference of spectral ... -
Quiver representations for Leavitt Path algebras as talented monoid classification detour.
(2024)There is a correspondence between quiver representations and path algebras. In this talk, we will see Leavitt Path algebras as a special case for such representation and how it will take a role in its classifications in ... -
An account on certain annihilating properties in Leavitt path algebras.
(2024)We present that for any graph E and for a commutative unital ring R, the nil ideals of the Leavitt path algebra LR(E) depend solely only the nil ideals of the ring R. A connection between the Jacobson radical of LR(E) and ... -
Extension problem associated with socle of monomial algebras.
(2024)We show that a monomial algebra Λ over an algebraically closed field K is self-injective if and only if each map soc(ΛΛ) −→ ΛΛ can be extended to an endomorphism of ΛΛ, and provide a complete classification of such ... -
Geodesic connectedness of a spacetime with a causal Killing vector field.
(2024)We study the geodesic connectedness of a globally hyperbolic spacetime (M, g) admitting a complete smooth Cauchy hypersurface S and endowed with a complete causal Killing vector field K. The main assumptions are that ... -
Superficies de curvatura no positiva en la esfera tridimensional.
(2024)Demostraremos que toda esfera analítica bidimensional $S$ inmersa en $S^3$, con curvaturas principales $k_1,k_2$ cumpliendo que $k_1 k_2\leq 0$ debe ser totalmente umbilical. Esto mejora algunos resultados bien conocidos ...