Let $\sigma=\{ \sigma_{ i}|i\in I\}$ be a partition of the set of all primes $\mathbb{ P}$, $G$ a finite group and $\sigma(G)=\{ \sigma_{ i}|\sigma_{ i}\cap \pi(|G|)\neq\emptyset\}$. A subgroup $S$ of a group $G$ is called a $\sigma_i$-sylowizer of a $\sigma_i$-subgroup $R$ in $G$ if $S$ is maximal in $G$ with respect to having $R$ as its Hall $\sigma_i$-subgroup. The main aim of this paper is to investigate the influence of $\sigma_i$-sylowizers on the structure of finite groups. We obtained some new characterizations of supersoluble groups by the permutability of the $\sigma_i$-sylowizers of some $\sigma_i$-subgroups.
Categories: math.GR