Equivariant $KK$-theory and model categories

Fuente: arXiv
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Autori principali: Datta, Anupam, Joachim, Michael
Natura: Preprint
Pubblicazione: 2025
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author Datta, Anupam
Joachim, Michael
author_facet Datta, Anupam
Joachim, Michael
contents We cast Kasparov's equivariant KK-theory in the framework of model categories. We obtain a stable model structure on a certain category of locally multiplicative convex $G$-$C^*$-algebras, which naturally contains the stable $\infty$-category $KK^G_{\operatorname{sep}}$ as described by Bunke, Engel, Land (\cite{BEL}). Non-equivariantly, $KK$-theory was studied using model categories by Joachim-Johnson (\cite{MJ}). We generalize their ideas in the equivariant case, and also fix some critical errors that their work had.
format Preprint
id arxiv_https___arxiv_org_abs_2506_16238
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Equivariant $KK$-theory and model categories
Datta, Anupam
Joachim, Michael
K-Theory and Homology
Algebraic Topology
Operator Algebras
We cast Kasparov's equivariant KK-theory in the framework of model categories. We obtain a stable model structure on a certain category of locally multiplicative convex $G$-$C^*$-algebras, which naturally contains the stable $\infty$-category $KK^G_{\operatorname{sep}}$ as described by Bunke, Engel, Land (\cite{BEL}). Non-equivariantly, $KK$-theory was studied using model categories by Joachim-Johnson (\cite{MJ}). We generalize their ideas in the equivariant case, and also fix some critical errors that their work had.
title Equivariant $KK$-theory and model categories
topic K-Theory and Homology
Algebraic Topology
Operator Algebras
url https://arxiv.org/abs/2506.16238