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Related papers: The Equivariant Generating Hypothesis

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Freyd's generating hypothesis, interpreted in the stable module category of a finite p-group G, is the statement that a map between finite-dimensional kG-modules factors through a projective if the induced map on Tate cohomology is trivial.…

Representation Theory · Mathematics 2009-12-03 David J. Benson , Sunil K. Chebolu , J. Daniel Christensen , Jan Minac

Let $G$ be a finite group and let $k$ be a field whose characteristic $p$ divides the order of $G$. Freyd's generating hypothesis for the stable module category of $G$ is the statement that a map between finite-dimensional $kG$-modules in…

Representation Theory · Mathematics 2019-08-15 Sunil K. Chebolu , J. Daniel Christensen , Ján Mináč

This monograph introduces a framework for genuine proper equivariant stable homotopy theory for Lie groups. The adjective `proper' alludes to the feature that equivalences are tested on compact subgroups, and that the objects are built from…

Algebraic Topology · Mathematics 2023-08-15 Dieter Degrijse , Markus Hausmann , Wolfgang Lück , Irakli Patchkoria , Stefan Schwede

If $G$ is a finite group or a torus, it is known that there is an isomorphism between the Grothendieck group of homotopy representations and that of generalized homotopy representations for $G$. We prove that there is such an isomorphism…

Algebraic Topology · Mathematics 2023-11-21 Erik Knutsen

We extend the theory of equivariant orthogonal spectra from finite groups to profinite groups, and more generally from compact Lie groups to compact Hausdorff groups. The G-homotopy theory is "pieced together" from the G/U-homotopy theories…

Algebraic Topology · Mathematics 2014-11-11 Halvard Fausk

Let G be a finite group. The stable module category of G has been applied extensively in group representation theory. In particular, it has been used to great effect that it is a triangulated category which is compactly generated. Let H be…

Group Theory · Mathematics 2008-08-25 Matthew Grime , Peter Jorgensen

In this paper, we prove a version of Freyd's generating hypothesis for triangulated categories: if D is a cocomplete triangulated category and S is an object in D whose endomorphism ring is graded commutative and concentrated in degree…

Algebraic Topology · Mathematics 2007-05-23 Keir H. Lockridge

We give a new proof of the universal property of $KK^G$-theory with respect to stability, homotopy invariance and split-exactness for $G$ a locally compact group, or a locally compact (not necessarily Hausdorff) groupoid, or a countable…

K-Theory and Homology · Mathematics 2019-12-09 Bernhard Burgstaller

In a previous paper, we have constructed, for an arbitrary Lie group G and any of the fields F=R or C, a good equivariant cohomology theory KF_G^*(-) on the category of proper $G$-CW-complex and have justified why it deserved the label…

Algebraic Topology · Mathematics 2010-11-02 Clément de Seguins Pazzis

Using groupoid $S^1$-central extensions, we present, for a compact simple Lie group $G$, an infinite dimensional model of $S^1$-gerbe over the differential stack $G/G$ whose Dixmier-Douady class corresponds to the canonical generator of the…

Symplectic Geometry · Mathematics 2007-05-23 Kai Behrend , Ping Xu , Bin Zhang

We show that the category of symmetric spectra can be used as a model for global equivariant homotopy theory of finite groups.

Algebraic Topology · Mathematics 2019-05-29 Markus Hausmann

We investigate compact projective generators in the category of equivariant $D$-modules on a smooth affine variety. For a reductive group $G$ acting on a smooth affine variety $X$, there is a natural countable set of compact projective…

Representation Theory · Mathematics 2020-10-07 Gwyn Bellamy , Sam Gunningham , Sam Raskin

Freyd's generating hypothesis for the stable module category of a non-trivial finite group G is the statement that a map between finitely generated kG-modules that belongs to the thick subcategory generated by k factors through a projective…

Representation Theory · Mathematics 2009-12-03 Jon F. Carlson , Sunil K. Chebolu , Jan Minac

We rework and generalize equivariant infinite loop space theory, which shows how to construct $G$-spectra from $G$-spaces with suitable structure. There is a classical version which gives classical $\Omega$-$G$-spectra for any topological…

Algebraic Topology · Mathematics 2025-08-04 J. Peter May , Mona Merling , Angélica M. Osorno

We introduce and compare two approaches to equivariant homotopy theory in a topological or ordinary Quillen model category. For the topological model category of spaces, we generalize Piacenza's result that the categories of topological…

Algebraic Topology · Mathematics 2017-03-06 Marc Stephan

Freyd's Generating Hypothesis is an important problem in topology with deep structural consequences for finite stable homotopy. Due to its complexity some recent work has examined analogous questions in various other triangulated…

Operator Algebras · Mathematics 2017-04-07 Snigdhayan Mahanta

For any compact Lie group $G$, we give a description of genuine $G$-spectra in terms of the naive equivariant spectra underlying their geometric fixedpoints. We use this to give an analogous description of cyclotomic spectra in terms of…

Algebraic Topology · Mathematics 2017-10-18 David Ayala , Aaron Mazel-Gee , Nick Rozenblyum

In this paper we develop the basic homotopy theory of G-symmetric spectra (that is, symmetric spectra with a G-action) for a finite group G, as a model for equivariant stable homotopy with respect to a G-set universe. This model lies in…

Algebraic Topology · Mathematics 2018-05-07 Markus Hausmann

Let G be a finite group and let k be a field of characteristic p. Given a finitely generated indecomposable non-projective kG-module M, we conjecture that if the Tate cohomology $\HHHH^*(G, M)$ of G with coefficients in M is finitely…

Representation Theory · Mathematics 2011-11-08 Jon F. Carlson , Sunil K. Chebolu , Jan Minac

Let S be a generating set of a group G. We say that G has FINITE WIDTH relative to S if G=(S\cup S^{-1})^k for a suitable natural number k. We say that a group G is a group of FINITE C-WIDTH if G has finite width with respect to all…

Group Theory · Mathematics 2011-05-31 Valery Bardakov , Vladimir Tolstykh , Vladimir Vershinin
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