假设G是有限群.子群H称为G的 -子群,如果对任何g∈G有NG(H)∩H^g≤H.用 (G)表示G中所有 -子群的集合.本文讨论某些素数阶子群和4阶循环子群是 -子群的群的结构.
Let G be a finite group. A subgroup H of G is called an -subgroup of G if the following condition is satisfied :No(H) AH^g ≤H for all g ∈ G. Let (G) denote the set of all -subgroups of a finite group G. The aim of this paper is to investigate the structure of finite group G under the assumption that some subgroups of prime power orders belong to (G).