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arXiv 2401.12904math.QAmath.GR
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杨-巴克斯特方程的新简单解及其置换群

New simple solutions of the Yang--Baxter equation and their permutation groups

Ferran Cedo, Jan Okninski

AI总结:

本文构造了一类新的杨-巴克斯特方程集合论解,给出其为简单解的充要条件,并确定了一类丰富子类置换群的左 brace 结构,同时构造了非平方基数的有限简单解。

摘要:

构造了一类新的不可分解、不可收缩、对合、非退化的集合论杨-巴克斯特方程解。该类解补充了文献[CO22]中构造的此类解,并且它们共同推广了文献[CO21]定理4.7中描述的解类。找到了这些新解为简单解的充分必要条件。对于这些解的一个丰富子类,确定了其置换群(视为左 brace)的结构。特别地,这些结果回答了文献[CO21]中提出的一个问题。在有限情形下,所有这些解都具有平方基数。还构造了一类新的非平方基数的有限简单解,使得其置换群为简单左 brace。

英文摘要:

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 generalize the class of solutions described in \cite[Theorem 4.7{CO21}. Necessary and sufficient conditions are found in order that these new solutions are simple. For a rich subclass of these solutions the structure of their permutation groups, considered as left braces, is determined. In particular, these results answer a question stated in \cite{CO21}. In the finite case, all these solutions have square cardinality. A new class of finite simple solutions of non-square cardinality such that their permutation groups are simple left braces is also constructed.

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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