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arXiv:1703.10942 [math.RT]AbstractReferencesReviewsResources

Separable commutative rings in the stable module category of cyclic groups

Paul Balmer, Jon F. Carlson

Published 2017-03-31Version 1

We prove that the only separable commutative ring-objects in the stable module category of a finite cyclic p-group G are the ones corresponding to subgroups of G. We also describe the tensor-closure of the Kelly radical of the module category and the stable module category of any finite group.

Comments: 19 pages
Categories: math.RT, math.CT
Subjects: 20C20, 14F20, 18E30
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