English

A note on semiprime skew left braces and related semidirect products

Quantum Algebra 2025-01-22 v2

Abstract

In this paper, we focus on semiprime skew left braces provided by semidirect products. We show that if a semidirect product B1B2B_1\rtimes B_2 is semiprime and B1B_1 is Artinian, then B1B_1 must be semiprime. Moreover, we prove that the semidirect product of strongly semiprime skew left braces is strongly semiprime. Finally, following \cite[Question 11]{smoktunowicz2024more}, we provide examples of skew left braces of abelian type that are non-simple and strongly prime.

Keywords

Cite

@article{arxiv.2410.20524,
  title  = {A note on semiprime skew left braces and related semidirect products},
  author = {Marco Castelli},
  journal= {arXiv preprint arXiv:2410.20524},
  year   = {2025}
}

Comments

12 pages, minor changes based on referee's comments. Accepted for publication in Bull. Math. Simon Stevin