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arXiv · 1703.10942

Separable commutative rings in the stable module category of cyclic groups

Paul Balmer·Jon F. Carlson
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Abstract

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 of the stable module category of any finite group.

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Paul Balmer, Jon F. Carlson. 2017-03-31. Separable commutative rings in the stable module category of cyclic groups. https://doi.org/10.1007/s10468-017-9719-7

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