On cohomologically Trivially modules over finite $p$-groups

Fuente: arXiv
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Main Authors: Guerboussa, Yassine, Guedri, Maria
Format: Preprint
Published: 2025
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author Guerboussa, Yassine
Guedri, Maria
author_facet Guerboussa, Yassine
Guedri, Maria
contents We show that every finitely generated cohomologically trivial module over $RG$, where $G$ is a finite $p$-group and $R$ is a $p$-adic ring, splits as the direct sum of a finite cohomologically trivial $RG$-module and a free $RG$-module. Along the way, we also establish other results concerning generators and relators of such modules.
format Preprint
id arxiv_https___arxiv_org_abs_2510_20418
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On cohomologically Trivially modules over finite $p$-groups
Guerboussa, Yassine
Guedri, Maria
Group Theory
20J06, 20D15
We show that every finitely generated cohomologically trivial module over $RG$, where $G$ is a finite $p$-group and $R$ is a $p$-adic ring, splits as the direct sum of a finite cohomologically trivial $RG$-module and a free $RG$-module. Along the way, we also establish other results concerning generators and relators of such modules.
title On cohomologically Trivially modules over finite $p$-groups
topic Group Theory
20J06, 20D15
url https://arxiv.org/abs/2510.20418