A $G$-covering subgroup system of a finite group for some classes of $\sigma$-soluble groups

A-Ming Liu, W. Guo, Inna N. Safonova +1

Let $\mathfrak{F}$ be a class of group and $G$ a finite group. Then a set $\Sigma$ of subgroups of $G$ is called a \emph{$G$-covering subgroup system} for the class $\mathfrak{F}$ if $G\in {\…