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The Bogomolov multiplier of finite simple groups

Boris Kunyavskii
Arxiv ID: 0712.4069Last updated: 8/3/2022
The subgroup of the Schur multiplier of a finite group G consisting of all cohomology classes whose restriction to any abelian subgroup of G is zero is called the Bogomolov multiplier of G. We prove that if G is quasisimple or almost simple, its Bogomolov multiplier is trivial except for the case of certain covers of PSL(3,4).

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