English

Monoidal model structures over infinite groups

Representation Theory 2025-10-28 v2

Abstract

The stable category of modules over the algebra of a finite group with coefficients in a field is a compactly generated tensor triangulated category, that has been studied extensively in representation theory. In this paper, we provide a plethora of infinite groups G, for which the category of kG-modules (where k is a commutative coherent ring of finite global dimension) admits a monoidal model structure, in the sense of Hovey, whose associated homotopy category is a compactly generated tensor triangulated category. To that end, we use a technique recently introduced by the authors, which is based on Kropholler's operation LH and the second author's operation {\Phi}.

Keywords

Cite

@article{arxiv.2510.08195,
  title  = {Monoidal model structures over infinite groups},
  author = {Ioannis Emmanouil and Olympia Talelli},
  journal= {arXiv preprint arXiv:2510.08195},
  year   = {2025}
}
R2 v1 2026-07-01T06:26:45.648Z