Hopf Galois structures on field extensions of degree twice an odd prime square and their associated skew left braces

We determine the Hopf Galois structures on a Galois field extension of degree twice an odd prime square and classify the corresponding skew left braces. Besides we determine the separable field extensions of degree twice an odd prime square allowing a cyclic Hopf Galois structure and the number of t...

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Bibliographic Details
Author: Crespo Vicente, Teresa
Format: article
Status:Versión aceptada para publicación
Publication Date:2021
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/190525
Online Access:https://hdl.handle.net/2445/190525
Access Level:Open access
Keyword:Àlgebres de Hopf
Teoria de Galois
Hopf algebras
Galois theory
Description
Summary:We determine the Hopf Galois structures on a Galois field extension of degree twice an odd prime square and classify the corresponding skew left braces. Besides we determine the separable field extensions of degree twice an odd prime square allowing a cyclic Hopf Galois structure and the number of these structures.