Indecomposable solutions of the Yang–Baxter equation of square-free cardinality

F Cedó, J Okniński - Advances in Mathematics, 2023 - Elsevier
Indecomposable involutive non-degenerate set-theoretic solutions (X, r) of the Yang–Baxter
equation of cardinality p 1⋯ pn, for different prime numbers p 1,…, pn, are studied. It is …

Studying solutions of the Yang-Baxter equation through skew braces, with an application to indecomposable involutive solutions with abelian permutation group

M Castelli, S Trappeniers - arXiv preprint arXiv:2303.00581, 2023 - arxiv.org
We connect properties of set-theoretic solutions to the Yang--Baxter equation to properties of
their permutation skew brace. In particular, a variation of the multipermutation level of a …

Cocyclic braces and indecomposable cocyclic solutions of the Yang-Baxter equation

P Jedlička, A Pilitowska, A Zamojska-Dzienio - Proceedings of the …, 2022 - ams.org
We study indecomposable involutive set-theoretic solutions of the Yang-Baxter equation
with cyclic permutation groups (cocyclic solutions). We give a complete system of three …

Indecomposable solutions of the Yang-Baxter equation with permutation group of sizes pq and p2q

S Ramírez - Communications in Algebra, 2023 - Taylor & Francis
In this paper we study the problem of the classification of indecomposable solutions of the
Yang-Baxter equation. Using a scheme proposed by Bachiller, Cedó, and Jespers, and …

Simplicity of indecomposable set-theoretic solutions of the Yang–Baxter equation

M Castelli, M Mazzotta, P Stefanelli - Forum Mathematicum, 2022 - degruyter.com
This paper aims to deepen the theory of bijective non-degenerate set-theoretic solutions of
the Yang–Baxter equation, not necessarily involutive, by means of q-cycle sets. We entirely …

Convergence theory of efficient parametric iterative methods for solving the Yang-Baxter-like matrix equation

R Erfanifar, K Sayevand, M Hajarian - Engineering Computations, 2024 - emerald.com
Convergence theory of efficient parametric iterative methods for solving the Yang-Baxter-like
matrix equation | Emerald Insight Books and journals Case studies Expert Briefings Open Access …

A characterization of finite simple set-theoretic solutions of the Yang-Baxter equation

M Castelli - Proceedings of the American Mathematical Society, 2023 - ams.org
A characterization of finite simple set-theoretic solutions of the Yang-Baxter equation Page 1
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY https://doi.org/10.1090/proc/16329 …

A note on semiprime skew left braces and related semidirect products

M Castelli - arXiv preprint arXiv:2410.20524, 2024 - arxiv.org
In this paper, we focus on semiprime skew left braces provided by semidirect products. We
show that if a semidirect product $ B_1\rtimes B_2 $ is semiprime and $ B_1 $ is Artinian …

Simplicity and finite primitive level of indecomposable set-theoretic solutions of the Yang-Baxter equation

M Castelli, M Mazzotta, P Stefanelli - arXiv preprint arXiv:2107.11104, 2021 - arxiv.org
This paper aims to deepen the theory of bijective non-degenerate set-theoretic solutions of
the Yang-Baxter equation, not necessarily involutive, by means of q-cycle sets. We entirely …

Left cancellative left semi-braces of size and and their nilpotency

M Castelli - arXiv preprint arXiv:2208.03490, 2022 - arxiv.org
We study the structure of a left cancellative left semi-brace $ B $ such that the skew left brace
contained in $ B $ acts trivially on the additive idempotents by the lambda map. As a first …