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We define asymptotic transfers in bounded K-theory together with a context where this can be done in great generality. Controlled algebra plays a central role in many advances in geometric topology, including recent work on Novikov, Borel,…

K-Theory and Homology · Mathematics 2020-02-05 Gunnar Carlsson , Boris Goldfarb

We prove the Farrell-Jones conjecture for free-by-cyclic groups. The proof uses recently developed geometric methods for establishing the Farrell-Jones Conjecture.

Geometric Topology · Mathematics 2021-05-31 Mladen Bestvina , Koji Fujiwara , Derrick Wigglesworth

We study the Farrell-Jones Conjecture with coefficients in an additive G-category with involution. This is a variant of the L-theoretic Farrell-Jones Conjecture which originally deals with group rings with the standard involution. We show…

K-Theory and Homology · Mathematics 2007-10-15 Arthur Bartels , Wolfgang Lueck

We present a sufficient condition for groups to satisfy the Farrell-Jones Conjecture in algebraic K-theory and L-theory. The condition is formulated in terms of finite quotients of the group in question and is motivated by work of…

Geometric Topology · Mathematics 2011-11-10 Arthur Bartels , Wolfgang Lueck

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 $K$-theoretic Farrell-Jones conjecture for groups as in the title with coefficient rings and $C^*$-algebras which are stable with respect to compact operators. We use this and Higson-Kasparov's result that the Baum-Connes…

K-Theory and Homology · Mathematics 2014-12-16 Guillermo Cortiñas , Gisela Tartaglia

We prove the A-theoretic Farrell-Jones Conjecture for virtually solvable groups. As a corollary, we obtain that the conjecture holds for S-arithmetic groups and lattices in almost connected Lie groups.

K-Theory and Homology · Mathematics 2018-09-28 Daniel Kasprowski , Mark Ullmann , Christian Wegner , Christoph Winges

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, which computes the algebraic K-groups of the Hecke algebra…

K-Theory and Homology · Mathematics 2022-04-19 Arthur Bartels , Wolfgang Lueck

We show that the Farrell-Jones Conjecture holds for fundamental groups of graphs of groups with abelian vertex groups. As a special case, this shows that the conjecture holds for generalized Baumslag-Solitar groups.

Group Theory · Mathematics 2014-04-09 Giovanni Gandini , Sebastian Meinert , Henrik Rueping

Algebraic K-theory is the stable homotopy theory of homotopy theories, and it interacts with algebraic structures accordingly. In particular, we prove the Deligne Conjecture for algebraic K-theory.

K-Theory and Homology · Mathematics 2014-07-17 C. Barwick

We prove Weibel's conjecture for twisted $K$-theory when twisting by a smooth proper connective dg-algebra. Our main contribution is showing we can kill a negative twisted $K$-theory class using a projective birational morphism (in the same…

K-Theory and Homology · Mathematics 2020-09-29 Joel Stapleton

In this article we study the K- and L-theory of groups acting on trees. We consider the problem in the context of the fibered isomorphism conjecture of Farrell and Jones. We show that in the class of residually finite groups it is enough to…

Geometric Topology · Mathematics 2016-01-25 S. K. Roushon

In the past decades, one of the most fruitful approaches to the study of algebraic $K$-theory has been trace methods, which construct and study trace maps from algebraic $K$-theory to topological Hochschild homology and related invariants.…

Algebraic Topology · Mathematics 2025-05-19 David Chan , Teena Gerhardt , Inbar Klang

Controlled algebra plays a central role in many recent advances in geometric topology. This paper studies the iteration construction that was present from the very origins of the theory but started being exploited only recently. We develop…

K-Theory and Homology · Mathematics 2018-06-27 Gunnar Carlsson , Boris Goldfarb

The Farrell-Jones Fibered Isomorphism Conjecture for the stable topological pseudoisotopy theory has been proved for several classes of groups. For example for discrete subgroups of Lie groups, virtually poly-infinite cyclic groups, Artin…

K-Theory and Homology · Mathematics 2011-03-03 S. K. Roushon

We prove the K- and the $L$-theoretic Farrell-Jones conjecture with coefficients in additive categories and with finite wreath products for arbitrary lattices in virtually connected Lie groups.

K-Theory and Homology · Mathematics 2016-07-20 Holger Kammeyer , Wolfgang Lueck , Henrik Rueping

This is an expanded lecture note for "Masterclass on sofic groups and applications to operator algebras" (University of Copenhagen, 5-9 November 2012). It is about algebraic aspects of the Connes Embedding Conjecture. It contains new proofs…

Operator Algebras · Mathematics 2013-02-19 Narutaka Ozawa

We introduce filtered algebraic $K$-theory of a ring $R$ relative to a sublattice of ideals. This is done in such a way that filtered algebraic $K$-theory of a Leavitt path algebra relative to the graded ideals is parallel to the gauge…

Rings and Algebras · Mathematics 2021-09-20 Søren Eilers , Gunnar Restorff , Efren Ruiz , Adam P. W. Sørensen

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

Algebraic $K$-theory is a homology theory that behaves very well on sufficiently nice objects such as stable $C^*$-algebras or smooth algebraic varieties, and very badly in singular situations. This survey explains how to exploit this to…

K-Theory and Homology · Mathematics 2014-03-06 Guillermo Cortiñas