A generalization of Ito's theorem to skew braces
Group Theory
2024-01-08 v2 Quantum Algebra
Rings and Algebras
Abstract
The famous theorem of It\^{o} in group theory states that if a group is the product of two abelian subgroups and , then is metabelian. We shall generalize this to the setting of a skew brace . Our main result says that if or is the product of two trivial sub-skew braces and which are both left and right ideals in the opposite skew brace of , then is meta-trivial. One can recover It\^{o}'s Theorem by taking to be an almost trivial skew brace.
Keywords
Cite
@article{arxiv.2305.10081,
title = {A generalization of Ito's theorem to skew braces},
author = {Cindy Tsang},
journal= {arXiv preprint arXiv:2305.10081},
year = {2024}
}
Comments
35 pages; Proposition 2.4 and Corollary 2.6 were modified (there was a small mistake in the proof in version 1), and the hypothesis in Lemma 6.4 was slightly relaxed. Also fixed some typos