English

Finite almost simple groups whose holomorph contains a solvable regular subgroup

Group Theory 2024-03-25 v2 Rings and Algebras

Abstract

In our previous paper, we gave a complete list of the finite non-abelian simple groups whose holomorph contains a solvable regular subgroup. In this paper, we refine our previous work by considering all finite almost simple groups. In particular, our result yields a complete characterization of the finite almost simple groups which occur as the type of a Hopf-Galois structure on a solvable extension, or equivalently, the additive group of a skew brace having a solvable multiplicative group.

Keywords

Cite

@article{arxiv.2312.15745,
  title  = {Finite almost simple groups whose holomorph contains a solvable regular subgroup},
  author = {Cindy Tsang},
  journal= {arXiv preprint arXiv:2312.15745},
  year   = {2024}
}

Comments

10 pages; very minor changes

R2 v1 2026-06-28T14:01:35.852Z