A note on set-theoretic solutions of the Yang–Baxter equation

Autor: Agata Smoktunowicz
Rok vydání: 2018
Předmět:
Zdroj: Smoktunowicz, A 2018, ' A note on set-theoretic solutions of the Yang-Baxter equation ', Journal of Algebra, vol. 500, pp. 3-18 . https://doi.org/10.1016/j.jalgebra.2016.04.015
ISSN: 0021-8693
DOI: 10.1016/j.jalgebra.2016.04.015
Popis: This paper shows that every finite non-degenerate involutive set theoretic solution (X,r) of the Yang-Baxter equation whose symmetric group has cardinality which a cube-free number is a multipermutation solution. Some properties of finite braces are also investigated (Theorems 3, 5 and 11). It is also shown that if A is a left brace whose cardinality is an odd number and (-a) b=-(ab) for all a, b A, then A is a two-sided brace and hence a Jacobson radical ring. It is also observed that the semidirect product and the wreath product of braces of a finite multipermutation level is a brace of a finite multipermutation level.
Comment: Added a missing assumption in Theorem 5.2
Databáze: OpenAIRE