The influence of partially $\tau$-quasinormal subgroups on the structure of finite groups

Year 2017, Volume: 46 Issue: 3, 389 - 395, 01.06.2017

Changwen Li Shouhong Qiao Jianhong Huang

Abstract

A subgroup $H$ of a group $G$ is said to be $\tau$-quasinormal in $G$ if $H$ permutes with every Sylow subgroup $Q$ of $G$ such that $(|H|,|Q|)=1$ and $(|H|,|Q|^G)\neq1$; $H$ is called partially $\tau$-quasinormal in $G$ if $G$ has a normal subgroup $T$ such that $HT$ is $S$-quasinormal in $G$ and $H\cap T\leq H_{\tau G}$, where $H_{\tau G}$ is the subgroup generated by all those subgroups of $H$ which are $\tau$-quasinormal in $G$. In this paper, we investigate the influence of some partially $\tau$-quasinormal subgroups on the structure
of finite group. Some new characterizations of $p$-supersoluble and $p$-nilpotent groups are obtained.

Keywords

$S$-quasinormal, partially $\tau$-quasinormal, $p$-supersoluble, $p$-nilpotent

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