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In this paper we present a characterization of finite simple involutive non-degenerate set-theoretic solutions of the Yang-Baxter equation by means of left braces and we provide some significant examples.

Quantum Algebra · Mathematics 2022-04-01 Marco Castelli

We study simple set-theoretic solutions of the Yang-Baxter equation that are finite and non-degenerate. Such retractable solutions are fully described and to investigate the irretracble solutions we give a new algebraic method. Our approach…

Rings and Algebras · Mathematics 2025-10-03 Ilaria Colazzo , Eric Jespers , Łukasz Kubat , Arne Van Antwerpen

A new class of indecomposable, irretractable, involutive, non-degenerate set-theoretic solutions of the Yang--Baxter equation is constructed. This class complements the class of such solutions constructed in \cite{CO22} and together they…

Quantum Algebra · Mathematics 2024-06-11 Ferran Cedo , Jan Okninski

The problem of constructing all the non-degenerate involutive set-theoretic solutions of the Yang-Baxter equation recently has been reduced to the problem of describing all the left braces. In particular, the classification of all finite…

Quantum Algebra · Mathematics 2017-05-25 David Bachiller , Ferran Cedó , Eric Jespers , Jan Okniński

Several aspects of relations between braces and non-degenerate involutive set-theoretic solutions of the Yang-Baxter equation are discussed and many consequences are derived. In particular, for each positive integer $n$ a finite square-free…

Rings and Algebras · Mathematics 2012-05-17 Ferran Cedo , Eric Jespers , Jan Okninski

Given a left brace $G$, a method to construct all the involutive, non-degenerate set-theoretic solutions $(Y,s)$ of the YBE, such that $\mathcal{G}(Y,s)\cong G$ is given. This method depends entirely on the brace structure of $G$.

Group Theory · Mathematics 2015-03-11 David Bachiller , Ferran Cedo , Eric Jespers

In the first part of this paper, we investigate the retraction of finite uniconnected involutive non-degenerate set-theoretic solutions of the Yang-Baxter equation by means of left braces, giving a precise description in some cases. In the…

Quantum Algebra · Mathematics 2022-06-17 Marco Castelli

Braces were introduced by Rump as a promising tool in the study of the set-theoretic solutions of the Yang-Baxter equation. It has been recently proved that, given a left brace $B$, one can construct explicitly all the non-degenerate…

Group Theory · Mathematics 2016-10-04 D. Bachiller , F. Cedó , E. Jespers , J. Okninski

Employing the algebraic structure of the left brace and the dynamical extensions of cycle sets, we investigate a class of indecomposable involutive set-theoretic solutions of the Yang-Baxter equation having specific imprimitivity blocks.…

Quantum Algebra · Mathematics 2020-11-23 Marco Castelli , Francesco Catino , Paola Stefanelli

We study the class of one-generator solutions to the Yang-Baxter equation, extending some recent results concerning the classes of involutive and multipermutation solutions. Moreover we show the precise relationship between indecomposable…

Quantum Algebra · Mathematics 2025-06-17 Marco Castelli

The study of non-degenerate set-theoretic solutions of the Yang-Baxter equation calls for a deep understanding of the algebraic structure of a skew left brace. In this paper, the skew brace theoretical property of solubility is introduced…

The main aim of this paper is to determine reflections to bijective and non-degenerate solutions of the Yang-Baxter equation, by exploring their connections with their derived solutions. This is motivated by a recent description of left…

Quantum Algebra · Mathematics 2025-05-02 Andrea Albano , Marzia Mazzotta , Paola Stefanelli

In this paper we discuss and characterize several set-theoretic solutions of the Yang-Baxter equation obtained using skew lattices, an algebraic structure that has not yet been related to the Yang-Baxter equation. Such solutions are…

Quantum Algebra · Mathematics 2020-02-06 Karin Cvetko-Vah , Charlotte Verwimp

We consider involutive, non-degenerate, finite set theoretic solutions of the Yang-Baxter equation. Such solutions can be always obtained using certain algebraic structures that generalize nil potent rings called braces. Our main aim here…

Mathematical Physics · Physics 2021-09-23 Anastasia Doikou

The quantum Yang-Baxter equation is a braiding condition on vector spaces which is of high relevance in several fields of mathematics, such as knot theory and quantum group theory. Their combinatorial counterpart are set-theoretic solutions…

Quantum Algebra · Mathematics 2024-10-21 Carsten Dietzel , Silvia Properzi , Senne Trappeniers

We study 2-reductive non-involutive non-degenerate set-theoretic solutions of the Yang-Baxter equation. We give a combinatorial construction of any such solution of any (even infinite) size. We also prove that solutions associated to a skew…

Combinatorics · Mathematics 2023-03-28 Přemysl Jedlička , Agata Pilitowska

In the first part, we focus on indecomposable involutive solutions of the Yang-Baxter equation whose permutation group forces them to be uniconnected. Indecomposable involutive solutions with a permutation group isomorphic to a dihedral…

Quantum Algebra · Mathematics 2023-06-16 Marco Castelli , Santiago Ramírez

In this paper, we provide techniques to obtain left non-degenerate set-theoretic solutions of the Yang-Baxter equation, drawing on the class of right groups. To this end, we introduce the new algebraic structures of left $RG$-semibraces,…

Group Theory · Mathematics 2026-05-26 Andrea Albano , Alberto Facchini , Marzia Mazzotta , Paola Stefanelli

We study involutive non-degenerate set-theoretic solutions (X,r) of the Yang-Baxter equation on a finite set X. The emphasis is on the case where (X,r) is indecomposable, so the associated permutation group acts transitively on X. One of…

Quantum Algebra · Mathematics 2020-12-16 Ferran Cedó , Jan Okniński

Motivated by recent findings on the derivation of parametric non-involutive solutions of the Yang-Baxter equation we reconstruct the underlying algebraic structures, called near braces. Using the notion of the near braces we produce new…

Rings and Algebras · Mathematics 2024-01-30 Anastasia Doikou , Bernard Rybolowicz
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