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arXiv 2402.15652math.RA
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Yang-Baxter方程解的对角映射

Diagonals of solutions of the Yang-Baxter equation

Premysl Jedlicka, Agata Pilitowska

AI总结:

该文研究Yang-Baxter方程非对合集论解的对角映射,证明非退化解的对角映射是交换双射,解决了相关公开问题,还推广了多置换解的刻画与可分解性结果。

摘要:

我们研究Yang-Baxter方程非对合集论解中的对角映射。我们证明,对于非退化解,这些对角映射是可交换的双射。这对Cedó、Jespers和Verwimp提出的“每个非退化解都是双射的吗?”这一问题给出了肯定答案。此外,我们证明对于称为k-置换的解子类,仅需单侧非退化性就足以证明其中一个对角映射是可逆的。我们还给出了多置换解的等式刻画,并将Rump与Gateva-Ivanova关于可分解性的结果推广到非对合情形。特别地,我们证明每个有限水平、任意基数的无平方多置换解(不一定是对合的)都总是可分解的。

英文摘要:

We study the diagonal mappings in non-involutive set-theoretic solutions of the Yang-Baxter equation. We show that, for non-degenerate solutions, they are commuting bijections. This gives the positive answer to the question: ``Is every non-degenerate solution bijective?'' of Cedó, Jespers and Verwimp. Additionally, we show that for a subclass of solutions called k-permutational, only one-sided non-degeneracy suffices to prove that one of the diagonal mappings is invertible. We also present an equational characterization of multipermutation solutions and extend results of Rump and Gateva-Ivanova about decomposability to non-involutive case. In particular, we show that each, not necessarily involutive, square-free multipermutation solution of finite level and arbitrary cardinality, is always decomposable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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