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arXiv 1809.09418math.GRmath.RA
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双边斜支撑的加法群与乘法群性质之间的联系

Connections between properties of the additive and the multiplicative groups of a two-sided skew brace

T. Nasybullov

摘要:

研究了双边斜支撑的加法群与乘法群之间的关系。特别地,我们证明了:如果一个双边斜支撑的加法群是有限可解的(分别是可解的、剩余可解的、剩余有限的),那么这个斜支撑的乘法群也是可解的(分别是可解的、剩余可解的).证明了若双侧斜支撑的乘法群是幂零类$k$的幂零群,则该斜支撑的加法群至多是类$2k$的可解群.信结果推广的结果Byott说,如果乘法群的有限斜括号是阿贝尔,然后添加剂组的斜括号是可解的。此外,我们解决了两个问题(问题19.49和问题19.90(a))有关斜括号,制定了Kourovka笔记本电脑。

英文摘要:

We study relations between the additive and the multiplicative groups of a two-sided skew brace. In particular, we prove that if the additive group of a two-sided skew brace is finite solvable (respectively, finitely generated nilpotent, finitely generated residually nilpotent, finitely generated residually finite), then the multiplicative group of this skew brace is solvable (respectively, solvable, residually solvable, residually finite). Also, we prove that if the multiplicative group of a two-sided skew brace is nilpotent of nilpotency class $k$, then the additive group of this skew brace is solvable of class at most $2k$. The letter result generalizes the result of Byott which says that if the multiplicative group of a finite skew brace is abelian, then the additive group of this skew brace is solvable. In addition, we solve two problems (Problem 19.49 and Problem 19.90(a)) concerning skew braces which are formulated in the Kourovka notebook.

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