On one generalization of modular subgroups

Jianhong Huang, Bin Hu, Xun Zheng

Let $G$ be a finite group. If $M_n<M_{n-1}<\dots <M_1<M_0=G$ where $M_i$ is a maximal subgroup of $M_{i-1}$ for all $i=1,\dots ,n$, then $M_n$ ($n>0$) is an \emph{$…