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We calculate the representation-graded Bredon homology rings of all elementary abelian 2-groups with coefficients in the constant mod-2 Mackey functor. We exhibit minimal presentations for these rings as quotients of the polynomial algebra…

Algebraic Topology · Mathematics 2025-11-05 Markus Hausmann , Stefan Schwede

For Artin groups of dihedral type, we compute the Bredon homology groups of the classifying space for the family of virtually cyclic subgroups with coefficients in the K-theory of a group ring.

Algebraic Topology · Mathematics 2022-05-20 Yago Antolín , Ramón Flores

Complex braid groups are the natural generalizations of braid groups associated to arbitrary (finite) complex reflection groups. We investigate several methods for computing the homology of these groups. In particular, we get the Poincar\'e…

Algebraic Topology · Mathematics 2010-11-22 Filippo Callegaro , Ivan Marin

We complete the computation of the integral homology of the generalized braid group $B$ associated to an arbitrary irreducible complex reflection group $W$ of exceptional type. In order to do this we explicitely computed the…

Group Theory · Mathematics 2016-05-24 Ivan Marin

A spectral sequence calculating the homology groups of some spaces of maps equivariant under compact group actions is described. For the main example, we calculate the rational homology groups of spaces of even and odd maps $S^m \to S^M$,…

Algebraic Topology · Mathematics 2021-07-01 Victor Vassiliev

In this paper, for a finite group, we discuss a method for calculating equivariant homology with constant coefficients. We apply it to completely calculate the geometric fixed points of the equivariant spectrum representing equivariant…

Algebraic Topology · Mathematics 2020-11-24 Sophie Kriz

For certain contractible G-CW-complexes and F a family of subgroups of G, we construct a spectral sequence converging to the F-Bredon cohomology of G with E1-terms given by the F-Bredon cohomology of the stabilizer subgroups. As…

Algebraic Topology · Mathematics 2011-04-14 Fotini Dembegioti , Nansen Petrosyan , Olympia Talelli

We obtain the equivariant K-homology of the classifying space \underline{E}SL(3,Z) from the computation of its Bredon homology with respect to finite subgroups and coefficients in the representation ring. We also obtain the corresponding…

K-Theory and Homology · Mathematics 2009-08-07 Ruben Sanchez-Garcia

We study Bredon homology approximations for spaces with an action of a compact Lie group G. We show that if M is a coMackey functor satisfying mild p-locality conditions, then Bredon homology of a G-space X with coefficients in M is…

Algebraic Topology · Mathematics 2020-02-28 Gregory Z. Arone , William G. Dwyer , Kathryn Lesh

We prove that the Bredon homology or cohomology of the partition complex with fairly general coefficients is either trivial or computable in terms of constructions with the Steinberg module. The argument involves developing a theory of…

Algebraic Topology · Mathematics 2016-07-12 Gregory Z. Arone , William G. Dwyer , Kathryn Lesh

We present an overview of computational methods for Bredon cohomology with a special focus on infinite groups

Algebraic Topology · Mathematics 2023-04-06 Noe Barcenas

Over the complex numbers, we compute the $C_2$-equivariant Bredon motivic cohomology ring with $\mathbb{Z}/2$ coefficients. By rigidity, this extends Suslin's calculation of the motivic cohomology ring of algebraically closed fields of…

Algebraic Geometry · Mathematics 2023-11-01 Jeremiah Heller , Mircea Voineagu , Paul Arne Østvær

This is a revised version of the author's PhD thesis, including the corrections by the examiners. It also includes a few additional small corrections. In this thesis the objects of study are classifying spaces of groups with stabilisers in…

Group Theory · Mathematics 2012-09-03 Martin Fluch

For any finite group G, we construct a spectral sequence for computing the Bredon cohomology of a G-CW complex X, starting with the cohomology of X^H/\cup_{K>H}X^K with suitable local coefficients, for various H \leq G.

Algebraic Topology · Mathematics 2013-01-08 David Blanc , Debasis Sen

Let G be a group acting isometrically with discrete orbits on a separable complete CAT(0)-space of bounded topological dimension. Under certain conditions, we give upper bounds for the Bredon cohomological dimension of G for the families of…

Group Theory · Mathematics 2012-08-21 Dieter Degrijse , Nansen Petrosyan

Given a discrete group $G$, for any integer $r\geqslant0$ we consider the family of all virtually abelian subgroups of $G$ of rank at most $r$. We give an upper bound for the Bredon cohomological dimension of $G$ for this family for a…

Group Theory · Mathematics 2018-10-23 Tomasz Prytuła

In this paper we compute the homology of the braid groups, with coefficients in the module Z[q^+-1] given by the ring of Laurent polynomials with integer coefficients and where the action of the braid group is defined by mapping each…

Algebraic Topology · Mathematics 2009-05-21 Filippo Callegaro

Homological stability for sequences of groups is often proved by studying the spectral sequence associated to the action of a typical group in the sequence on a highly-connected simplicial complex whose stabilizers are related to previous…

Geometric Topology · Mathematics 2018-03-16 Allen Hatcher , Karen Vogtmann

A parametrization of irreducible representations associated with a regular adjoint orbit of a classical group over finite quotient rings of the ring of integer of a non-dyadic non-archimedean local field is presented. The parametrization is…

Number Theory · Mathematics 2020-09-01 Koichi Takase

Homology of braid groups and Artin groups can be related to the study of spaces of curves. We completely calculate the integral homology of the family of smooth curves of genus $g$ with one boundary component, that are double coverings of…

Algebraic Topology · Mathematics 2017-09-12 Filippo Callegaro , Mario Salvetti
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