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In this article we study a coarse version of the K-theoretic Farrell-Jones conjecture we call coarse or bounded isomorphism conjecture. With techniques that have already been used to prove the Farrell-Jones conjecture for hyperbolic groups…

K-Theory and Homology · Mathematics 2021-08-24 Markus Zeggel

In this note, we prove the K- and L-theoretic Farrell-Jones Conjecture with coefficients in an additive category for fundamental groups of graphs of virtually cyclic groups.

K-Theory and Homology · Mathematics 2016-02-23 Xiaolei Wu

We study the Fibered Isomorphism Conjecture of Farrell and Jones in L-theory for groups acting on trees. In several cases we prove the conjecture. This includes wreath products of abelian groups and free metabelian groups. We also deduce…

K-Theory and Homology · Mathematics 2012-04-30 S. K. Roushon

We prove the Farrell-Jones Conjecture for mapping tori of automorphisms of virtually torsion-free hyperbolic groups. The proof uses recently developed geometric methods for establishing the Farrell-Jones Conjecture by…

Geometric Topology · Mathematics 2021-05-28 Mladen Bestvina , Koji Fujiwara , Derrick Wigglesworth

We prove that the Farrell-Jones isomorphism conjecture for non-connective algebraic K-theory for a discrete group G and a coefficient ring R holds true if G belongs to the class of groups acting on trees, under certain conditions on G (see…

Algebraic Topology · Mathematics 2012-03-13 Marcelo Gomez Morteo

We show that the class of groups satisfying the K- and L-theoretic Farrell-Jones conjecture is closed under taking graph products of groups.

Group Theory · Mathematics 2014-10-01 Giovanni Gandini , Henrik Rueping

We survey the recent results and current issues on the topological rigidity problem for closed aspherical manifolds, i.e., connected closed manifolds whose universal coverings are contractible. A number of open problems and conjectures are…

Geometric Topology · Mathematics 2017-08-22 Ramesh Kasilingam

We prove that the Waldhausen nilpotent class group of an injective index 2 amalgamated free product is isomorphic to the Farrell-Bass nilpotent class group of a twisted polynomial extension. As an application, we show that the Farrell-Jones…

K-Theory and Homology · Mathematics 2016-05-18 James F. Davis , Qayum Khan , Andrew Ranicki

We prove the Farrell-Jones Conjecture for (non-connective) $A$-theory with coefficients and finite wreath products for hyperbolic groups, CAT(0)-groups, cocompact lattices in almost connected Lie groups and fundamental groups of manifolds…

Geometric Topology · Mathematics 2018-10-03 Nils-Edvin Enkelmann , Wolfgang Lück , Malte Pieper , Mark Ullmann , Christoph Winges

We prove the K-theoretic Farrell-Jones Conjecture for hyperbolic groups with (twisted) coefficients in any associative ring with unit.

K-Theory and Homology · Mathematics 2009-11-13 Arthur Bartels , Wolfgang Lueck , Holger Reich

We prove that every finitely generated Kleinian group that contains a finite, non-cyclic subgroup either is finite or virtually free or contains a surface subgroup. Hence, every arithmetic Kleinian group contains a surface subgroup.

Geometric Topology · Mathematics 2009-07-28 Marc Lackenby

This article will explore the K- and L-theory of group rings and their applications to algebra, geometry and topology. The Farrell-Jones Conjecture characterizes K- and L-theory groups. It has many implications, including the Borel and…

Geometric Topology · Mathematics 2010-03-29 Wolfgang Lueck

Equivariant homotopy methods developed over the last 20 years lead to recent breakthroughs in the Borel isomorphism conjectures for Loday assembly maps in K- and L-theories. An important consequence of these algebraic conjectures is the…

Algebraic Topology · Mathematics 2019-06-25 Gunnar Carlsson , Boris Goldfarb

We prove the Farrell-Jones Conjecture for algebraic K-theory of spaces for virtually poly-Z-groups. For this, we transfer the 'Farrell-Hsiang method' from the linear case to categories of equivariant, controlled retractive spaces.

K-Theory and Homology · Mathematics 2019-04-10 Mark Ullmann , Christoph Winges

We prove the $K$- and $L$-theoretic Farrell-Jones Conjecture with coefficients in an additive category for every normally poly-free group, in particular for even Artin groups of FC-type, and for all groups of the form $A\rtimes \mathbb{Z}$…

Algebraic Topology · Mathematics 2020-09-24 Benjamin Brück , Dawid Kielak , Xiaolei Wu

The Surface Group Conjectures are statements about recognising surface groups among one-relator groups, using either the structure of their finite-index subgroups, or all subgroups. We resolve these conjectures in the two generator case.…

Group Theory · Mathematics 2022-08-10 Giles Gardam , Dawid Kielak , Alan D. Logan

Smooth K-functors are introduced and the smooth K-theory of locally convex algebras is developed. It is proved that the algebraic and smooth K-functors are isomorphic on the category of quasi stable real (or complex) Frechet algebras.

K-Theory and Homology · Mathematics 2007-05-23 H. Inassaridze , T. Kandelaki

We reprise a $K_1$-valued refinement of Whitehead torsion originally studied by Gersten. We use this Gersten torsion to show that for nilpotent spaces with infinite fundamental group, any self-equivalence which acts as the identity on the…

Algebraic Topology · Mathematics 2026-01-22 Sacha Goldman

We show that (with one possible exception) there exist strongly dense free subgroups in any semisimple algebraic group over a large enough field. These are nonabelian free subgroups all of whose subgroups are either cyclic or Zariski dense.…

Group Theory · Mathematics 2011-03-28 Emmanuel Breuillard , Ben Green , Robert Guralnick , Terence Tao

Controlled $K$-theory is used to show that algebraic $K$-theory of virtually abelian groups is described by an assembly map defined using possibly-infinite hyperelementary subgroups. The Farrell-Jones summand (coming from infinite…

K-Theory and Homology · Mathematics 2007-05-23 Frank Quinn