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Related papers: Vanishing of the KNil groups: localization methods

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The aim of this survey is to present applications of covering techniques in the theory of Krull-Gabriel dimension. We start with recalling fundamental facts of the classical covering theory of quivers and locally bounded categories. Then we…

Representation Theory · Mathematics 2025-03-06 Grzegorz Pastuszak

We show that the category of finite-dimensional modules over the endomorphism algebra of a rigid object in a Hom-finite triangulated category is equivalent to the Gabriel-Zisman localisation of the category with respect to a certain class…

Representation Theory · Mathematics 2020-12-21 Aslak Bakke Buan , Bethany Marsh

We extend the Bass-Quillen Fundamental Theorem of Algebraic K-theory to the Waldhausen K-theory of connective ${\bf S}$-algebras. The same technique used in this extension also yields two localization theorems for the relative K-theory of a…

K-Theory and Homology · Mathematics 2014-11-05 Crichton Ogle

We introduce some classical concepts in the representation theory of compact groups, in order to use them for a new generalization of the Peter-Weyl Theorem. We mostly deal with functions on locally compact groups possessing large…

Representation Theory · Mathematics 2026-03-10 Y. Bavuma , E. Stevenson , F. G. Russo

We describe the applications of localization methods, in particular the functorial localization formula, in the proofs of several conjectures from string theory. Functorial localization formula pushes the computations on complicated moduli…

Mathematical Physics · Physics 2007-05-23 Kefeng Liu

A d\'evissage-type theorem in algebraic $K$-theory is a statement that identifies the $K$-theory of a Waldhausen category $\mathscr{C}$ in terms of the $K$-theories of a collection of Waldhausen subcategories of $\mathscr{C}$ when a…

K-Theory and Homology · Mathematics 2022-12-21 George Raptis

Let $L_n$ denote the Dwyer-Kan localization of the category of weak n-categories divided by the n-equivalences. We propose a list of properties that this simplicial category is likely to have, and conjecture that these properties…

Category Theory · Mathematics 2007-05-23 Carlos Simpson

We consider the equivariant Kasparov category associated to an \'etale groupoid, and by leveraging its triangulated structure we study its localization at the "weakly contractible" objects, extending previous work by R. Meyer and R. Nest.…

K-Theory and Homology · Mathematics 2024-12-23 Christian Bönicke , Valerio Proietti

We prove a Decomposition Theorem for the direct image of an irreducible local system on a smooth complex projective variety under a morphism with values in another smooth complex projective variety. For this purpose, we construct a category…

Algebraic Geometry · Mathematics 2011-01-04 Claude Sabbah

We attempt to generalize the $p$-modular representation theory of finite groups to finite transporter categories, which are regarded as generalized groups. We shall carry on our tasks through modules of transporter category algebras, a type…

Representation Theory · Mathematics 2017-03-06 Fei Xu

For a group G that splits as an amalgamation of A and B over a common subgroup C, there is an associated Waldhausen Nil-group, measuring the "failure" of Mayer-Vietoris for algebraic K-theory. Assume that (1) the amalgamation is…

K-Theory and Homology · Mathematics 2014-02-26 J. -F. Lafont , I. J. Ortiz

This article establishes, for an appropriate localisation of associative rings, a long exact sequence in algebraic K-theory. The main result goes as follows. Let A be an associative ring and let A-->B be the localisation with respect to a…

Rings and Algebras · Mathematics 2014-11-11 Amnon Neeman , Andrew Ranicki

We prove that the Waldhausen Nil-group associated to a virtually cyclic groups that surjects onto the infinite dihedral group vanishes if and only if the corresponding Farrell Nil-group associated to the canonical index two subgroup is…

K-Theory and Homology · Mathematics 2008-06-27 J. -F. Lafont , I. J. Ortiz

We develop the K-theory of sets with an action of a pointed monoid (or monoid scheme), analogous to the $K$-theory of modules over a ring (or scheme). In order to form localization sequences, we construct the quotient category of a nice…

K-Theory and Homology · Mathematics 2021-09-08 Ian Coley , Charles Weibel

We prove a "quantified" version of the Weyl-von Neumann theorem, more precisely, we estimate the ranks of approximants to compact operators appearing in the Voiculescu's theorem applied to commutative algebras. This allows considerable…

Functional Analysis · Mathematics 2010-05-24 Jan Spakula

In the present paper we discuss some recent versions of localisation methods for calculations in the groups of points of algebraic-like and classical-like groups. Namely, we describe relative localisation, universal localisation, and…

Rings and Algebras · Mathematics 2012-06-12 R. Hazrat , A. V. Stepanov , N. A. Vavilov , Z. Zhang

The aim of these notes is to collect and motivate the basic localization toolbox for the geometric study of ``spaces'', locally described by noncommutative rings and their categories of one-sided modules. We present the basics of Ore…

Quantum Algebra · Mathematics 2009-09-29 Zoran Skoda

We show that silting modules are closely related with localisations of rings. More precisely, every partial silting module gives rise to a localisation at a set of maps between countably generated projective modules and, conversely, every…

Representation Theory · Mathematics 2019-04-12 Frederik Marks , Jan Stovicek

We prove an analytic generalization of Koll\'ar's vanishing theorem, which contains the Nadel vanishing theorem as a special case.

Algebraic Geometry · Mathematics 2016-07-19 Osamu Fujino

Quillen's localization theorem is well known as a fundamental theorem in the study of algebraic K-theory. In this paper, we present its arithmetic analogue for the equivariant K-theory of arithmetic schemes, which are endowed with an action…

Algebraic Geometry · Mathematics 2019-05-15 Shun Tang