On S-Quasinormally Embedded and Weakly S-Supplemented Subgroups of Finite Groups

摘要

Suppose that G is a finite group and H is a subgroup of G. H is said to be s-quasinormally embedded in G if for each prime p dividing |H|, a Sylow p-subgroup of H is also a Sylow p-subgroup of some s-quasinormal subgroup of G; H is called weakly s-supplemented in G if there is a subgroup T of G such that G = HT and　H∩T ≤ H_(sG), where H_(sG) is the subgroup of H generated by all those subgroups of H which are s-quasinormal in G. We investigate the influence of s-quasinormally embedded and weakly s-supplemented subgroups on the structure of finite groups. Some recent results are generalized.