activity
20222026
collaborators

11 papers

math.AT2026

L^2-Betti numbers in prime characteristic and a conjecture of Wise

Grigori Avramidi, Wolfgang Lueck

We systematically study L^2-Betti numbers in zero and prime characteristic and apply them to a conjecture of Wise stating that all towers of a finite 2-complex are non-positive if…

math.GR2025

-torsion of automorphisms

Sam Hughes, Wolfgang Lueck

We develop the theory of -torsion of an automorphism of a group and compute it for every automorphism of a group which is hyperbolic and one-ended relative to a finite collect…

math.KT2025

Survey on the Farrell-Jones Conjecture

Wolfgang Lueck

This is a survey on the Farrell-Jones Conjecture about the algebraic K- and L-theory of groups rings and its applications to algebra, geometry, group theory, and topology.

math.KT2025

Some criteria concerning the rational vanishing of Whitehead groups

Wolfgang Lueck, Bob Oliver

We give several examples of finite groups for which the rank of the tensor product Wh is or is not zero. This is motivated…

math.KT2024

Algebraic K-theory of completed Kac-Moody groups

Arthur Bartels, Wolfgang Lueck, Stefan Witzel

We extend results for the K-theory of Hecke algebras of reductive -adic groups to completed Kac-Moody groups.

math.AT2023

Some problems and conjectures about -invariants

Dominik Kirstein, Christian Kremer, Wolfgang Lueck

In this article we give a survey on open problems and conjectures concerning L^2-invariants. We cover the whole portfolio and not only certain aspects as they are considered in the…

math.KT2023

Inheritance properties of the Farrell-Jones Conjecture for totally disconnected groups

Arthur Bartels, Wolfgang Lueck

In this paper we formulate and lay the foundations for the K-theoretic Farrell-Jones Conjecture for the Hecke algebra of totally disconnected groups. The main result of his paper i…

math.KT2023

Algebraic K-theory of reductive p-adic groups

Arthur Bartels, Wolfgang Lueck

Motivated by the Farrell-Jones Conjecture for group rings, we formulate the op-Farrell-Jones Conjecture for the K-theory of Hecke algebras of td-groups. We prove this…

math.GT2023

Almost equivariant maps for td-groups

Arthur Bartels, Wolfgang Lueck

We construct certain maps from buildings associated to td-groups to a space closely related to the classifying numerable -space for the family vcy of covirtually cy…

math.GT2023

On Nielsen realization and manifold models for classifying spaces

James F. Davis, Wolfgang Lueck

We consider the problem of whether, for a given virtually torsionfree discrete group , there exists a cocompact proper topological -manifold, which is equivariantly homotopy…

math.KT2022

On the algebraic K-theory of Hecke algebras

Arthur Bartels, Wolfgang Lueck

Consider a totally disconnected group G, which is covirtually cyclic, i.e., contains a normal compact open subgroup L such that G/L is infinite cyclic. We establish a Wang sequence…