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arXiv 1605.01166math.GR
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共轭型(n,1)有限群中的z-类

z-Classes in finite groups of conjugate type (n,1)

Shivam Arora, Krishnendu Gongopadhyay

摘要:

如果一个群$G$中的两个元素的中心化子在$G$中共轭,则称它们是$z$ -等价的或在同一$z$ -类中.在\cite{kkj}中,证明了一个非交换的$p$群$G$最多可以有$\frac{p^k-1}{p-1} +1$个数的$z$类,其中$|G/Z(G)|=p^k$ .本文刻画了共轭型$(n,1)$的$p$ -群达到这个最大数的特征.作为推论,我们刻画了具有素数阶换位子群和最大$z$类数的$p$-群.

英文摘要:

Two elements in a group $G$ are said to $z$-equivalent or to be in the same $z$-class if their centralizers are conjugate in $G$. In \cite{kkj}, it was proved that a non-abelian $p$-group $G$ can have at most $\frac{p^k-1}{p-1} +1$ number of $z$-classes, where $|G/Z(G)|=p^k$. In this note, we characterize the $p$-groups of conjugate type $(n,1)$ attaining this maximal number. As a corollary, we characterize $p$-groups having prime order commutator subgroup and maximal number of $z$-classes.

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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