On $\mathbb{Z}_N\rtimes\mathbb{Z}_2$-Hopf-Galois structures
Rings and Algebras
2021-08-26 v1 Group Theory
Number Theory
Abstract
Let be a finite Galois extension of fields with . In an earlier work of Timothy Kohl, the author enumerated dihedral Hopf-Galois structures acting on dihedral extensions. Dihedral group is one particular example of semidirect product of and . In this article we count the number of Hopf-Galois structures with Galois group of type , where are groups of the form when is odd with radical of being a Burnside number. As an application we also find the corresponding number of skew braces.
Cite
@article{arxiv.2108.11322,
title = {On $\mathbb{Z}_N\rtimes\mathbb{Z}_2$-Hopf-Galois structures},
author = {Namrata Arvind and Saikat Panja},
journal= {arXiv preprint arXiv:2108.11322},
year = {2021}
}