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arXiv · 2209.04591

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

Andrei V. Zavarnitsine
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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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Andrei V. Zavarnitsine. 2022-09-10. Automorphisms of nonsplit coverings of $PSL_2(q)$ in odd characteristic dividing $q-1$. https://doi.org/10.33048/semi.2022.19.022

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