Automorphisms of nonsplit coverings of $PSL_2(q)$ in odd characteristic dividing $q-1$

Published 10 Sep 2022 in math.GR | (2209.04591v1)

Abstract: We classify the nonsplit extensions of elementary abelian $p$-groups by $PSL_2(q)$, with odd $p$ dividing $q-1$, for an irreducible induced action, calculate the relevant low-dimensional cohomology groups, and describe the automorphism groups of such extensions.

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Authors (1)

Andrei V. Zavarnitsine

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