activity
20062026
most citedSolubility Criteria for Hopf-Galois Structures

16 citations · 30 across the 15 of their papers we have counts for

collaborators

20 papers

math.QA2026

Magma Automorphisms and Quasi-Linear Cycle Sets

Nigel P. Byott, Edgar Jasko

Rump asked in 2016 whether every finite quasi-linear cycle set is retractible. We reinterpret this question in terms of automorphisms of certain pointed magmas, and propose a conje…

math.GR2024

On a family of simple skew braces

Nigel P. Byott

Several constructions have been given for families of simple braces, but few examples are known of simple skew braces which are not braces. In this paper, we exhibit the first exam…

math.RA2024

On the number of quaternion and dihedral braces and Hopf--Galois structures

Nigel P. Byott, Fabio Ferri

We prove a conjecture of Guarnieri and Vendramin on the number of braces of a given order whose multiplicative group is a generalised quaternion group. At the same time, we give a…

math.GR2022

On Insoluble Transitive Subgroups in the Holomorph of a Finite Soluble Group

Nigel P. Byott

A question of interest both in Hopf-Galois theory and in the theory of skew braces is whether the holomorph of a finite soluble group can contain an insoluble…

math.NT2021

Hopf-Galois Structures on Non-Normal Extensions of Degree Related to Sophie Germain Primes

Nigel P. Byott, Isabel Martin-Lyons

We consider Hopf-Galois structures on separable (but not necessarily normal) field extensions of squarefree degree . If is the normal closure of then $G=\mathr…

math.RA2019

Skew Braces of Squarefree Order

Ali A. Alabdali, Nigel P. Byott

Let be a squarefree integer, and let , be two groups of order . Using our previous results on the enumeration of Hopf-Galois structures on Galois extensions of…