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We prove that the quotients of the group algebra of the braid group on 3 strands by a generic quartic and quintic relation respectively, have finite rank. This is a special case of a conjecture by Brou\'{e}, Malle and Rouquier for the…

表示论 · 数学 2016-04-25 Eirini Chavli

We consider the equivariant K-theory of a real semisimple Lie group which acts on the (complex) flag variety of its complexification group. We construct an assemble map in the framework of KK-theory and then we prove that it is an…

K理论与同调 · 数学 2021-03-09 Zhaoting Wei

We make an exposition of the proof of the Baum-Connes conjecture for the infinite dihedral group following the ideas of Higson and Kasparov.

K理论与同调 · 数学 2025-03-24 Eugenia Ellis , Emanuel Rodríguez Cirone , Gisela Tartaglia

We prove the Baum-Connes conjecture for hyperbolic groups and their subgroups.

算子代数 · 数学 2009-11-07 Igor Mineyev , Guoliang Yu

We establish a connection between Cohen-Lyndon triples and equivariant homology theory, with a focus on the Baum-Connes conjecture. In the first part of this work, we establish an excision sequence for the classifying spaces for proper…

K理论与同调 · 数学 2025-10-09 Shintaro Nishikawa , Nansen Petrosyan

We propose two definitions of configuration Lie groupoids and in both the cases we prove a Fadell-Neuwirth type fibration theorem for a class of Lie groupoids. We show that this is the best possible extension, in the sense that, for the…

几何拓扑 · 数学 2025-08-08 S K Roushon

We prove an analogue of the Baum-Connes conjecture for free orthogonal quantum groups. More precisely, we show that these quantum groups have a $ \gamma $-element and that $ \gamma = 1 $. It follows that free orthogonal quantum groups are $…

算子代数 · 数学 2011-07-12 Christian Voigt

We prove a topological version of the section conjecture for the profinite completion of the fundamental group of finite CW-complexes equipped with the action of a group of prime order $p$ whose $p$-torsion cohomology can be killed by…

数论 · 数学 2014-02-26 Ambrus Pal

In this paper, we prove the Farrell-Jones Conjecture for the solvable Baumslag-Solitar groups with coefficients in an additive category. We also extend our results to groups of the form, Z[1/p] semidirect product with any virtually cyclic…

几何拓扑 · 数学 2014-01-13 Tom Farrell , Xiaolei Wu

We present an alternative approach to the result of Guentner, Higson, and Weinberger concerning the Baum-Connes conjecture for finitely generated subgroups of SL(2,C). Using finite-dimensional methods, we show that the Baum-Connes assembly…

群论 · 数学 2007-12-24 Dmitry Matsnev

We study group extensions of Finite Abelian Groups using matrices. We also prove a Theorem for equivalence of extensions using matrices.

群论 · 数学 2018-02-16 Guhan Venkat

Inspired by the quantitative $K$-theory, in this paper, we introduce the coarse Baum-Connes conjecture with filtered coefficients which generalizes the original conjecture. There are two advantages for the conjecture with filtered…

算子代数 · 数学 2025-06-24 Jianguo Zhang

In this paper we introduce a common framework for describing the topological part of the Baum-Connes conjecture for a wide class of groups. We compute the Bredon homology for groups with aspherical presentation, one-relator quotients of…

K理论与同调 · 数学 2013-09-23 Yago Antolín , Ramón Flores

We develop a finite KKG-theory of C*-algebras following Arlettaz- H.Inassaridze's approach to finite algebraic K-theory. The Browder- Karoubi-Lambre's theorem on the orders of the elements for finite algebraic K-theory is extended to finite…

K理论与同调 · 数学 2009-10-01 Hvedri Inassaridze , Tamaz Kandelaki

Given a (not necessarily discrete) proper metric space $M$ with bounded geometry, we define a groupoid $G(M)$. We show that the coarse Baum--Connes conjecture with coefficients, which states that the assembly map with coefficients for G(M)…

算子代数 · 数学 2010-05-05 Jean-Louis Tu

In this paper we formulate a conjecture which is a strengthening of an extension theorem of Bakonyi and Timotin for positive definite functions on the free group on two generators. We prove that this conjecture implies Connes' embedding…

算子代数 · 数学 2020-01-14 Peter Burton , Kate Juschenko

We prove the strong Atiyah conjecture for right-angled Artin groups and right-angled Coxeter groups. More generally, we prove it for groups which are certain finite extensions or elementary amenable extensions of such groups.

几何拓扑 · 数学 2012-10-12 Peter Linnell , Boris Okun , Thomas Schick

We give a new proof of the Baum--Connes conjecture with coefficients for any second countable, locally compact topological group that acts properly and cocompactly on a finite-dimensional CAT(0)-cubical space with bounded geometry. The…

K理论与同调 · 数学 2019-08-29 Jacek Brodzki , Erik Guentner , Nigel Higson , Shintaro Nishikawa

We prove that if the classical Baum-Connes conjecture in complex K-theory is true (for a given discrete group G), then the conjecture is also true in the real case (for the same group G). The essential ingredients of the proof are the…

算子代数 · 数学 2016-09-07 Paul Baum , Max Karoubi

We propose a general conjecture on decompositions of finite simple groups as products of conjugates of an arbitrary subset. We prove this conjecture for bounded subsets of arbitrary finite simple groups, and for large subsets of groups of…

群论 · 数学 2014-02-26 Martin Liebeck , Nikolay Nikolov , Aner Shalev