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arXiv · 2601.04374

Arbitrary classes in >2-degree cohomology of a finite group with arbitrary coefficients may be trivialized in a finite extension

Adrien DeLazzer Meunier
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Abstract

The purpose of this note is to provide exposition for a proof of the statement in the title. This idea, that arbitrary cohomology classes (of high enough degree) of a finite group $G$ can be trivialized in a finite group extension, has been known to experts for some time.

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Adrien DeLazzer Meunier. 2026-01-07. Arbitrary classes in >2-degree cohomology of a finite group with arbitrary coefficients may be trivialized in a finite extension. https://arxiv.org/abs/2601.04374

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