activity
20152024
most citedA Fixed Point Decomposition of Twisted Equivariant K-Theory

3 citations · 5 across the 7 of their papers we have counts for

collaborators

10 papers

math.KT2024

On the -theory of groups of the form with square-free

Luis Jorge Sánchez Saldaña, Mario Velásquez

We provide an explicit computation of the topological -theory groups of semidirect products of the form $\mathbb{Z}^n\rtimes \math…

math.AT2024

On the group cohomology of groups of the form with square-free

Luis Jorge Sánchez Saldaña, Mario Velásquez

We provide an explicit computation of the cohomology groups (with untwisted coefficients) of semidirect products of the form with free of squ…

math.KT2022★ 3 cited

A Fixed Point Decomposition of Twisted Equivariant K-Theory

Tom Dove, Thomas Schick, Mario Velásquez

We present a decomposition of rational twisted -equivariant K-theory, a finite group, into cyclic group equivariant K-theory groups of fixed point spaces. This generalises t…

math.KT2021

Hecke operators in Bredon (co)homology, K-(co)homology and Bianchi groups

David Muñoz, Jorge Plazas, Mario Velásquez

In this article we provide a framework for the study of Hecke operators acting on the Bredon (co)homology of an arithmetic discrete group. Our main interest lies in the study of He…

math.KT2020

The topological K-theory of crystallographic groups with holonomy

Mario Velásquez

In this note we present a complete computation of the topological K-theory of the reduced C*-algebra of a semidirect product of the form with…

math.AT2020★ 1 cited

Proper actions and decompositions in equivariant K-theory

Andrés Angel, Edward Becerra, Mario Velásquez

In this paper we study a natural decomposition of -equivariant -theory of a proper -space, when is a Lie group with a compact normal subgroup acting trivially. Our…

math.KT2019★ 1 cited

Induced character in equivariant K-theory and wreath products

Germán Combariza, Juan Rodríguez, Mario Velásquez

Let be a finite group, be a compact -space. In this note we study the -graded algebra $$\mathcal{F}^q_G(X) = \bigoplus_{n\g…

math.KT2017

The algebraic and topological K-theory of the Hilbert Modular Group

Luis Jorge Sánchez Saldaña, Mario Velásquez

In this paper we provide descriptions of the Whitehead groups with coefficients in a ring of the Hilbert modular group and its reduced version, as well as for the topological K-the…

math.KT2016

A description of the assembly map for the Baum-Connes conjecture with coefficients

Mario Velásquez

In this note we set a configuration space description of the equivariant connective K-homology groups with coefficients in a unital C*-algebra for proper actions. Over this model w…

math.KT2015

Multiplicative Structures and the Twisted Baum-Connes Assembly map

Noé Bárcenas, Paulo Carrillo Rouse, Mario Velásquez

Using a combination of Atiyah-Segal ideas on one side and of Connes and Baum-Connes ideas on the other, we prove that the Twisted geometric K-homology groups of a Lie groupoid have…