设G是一个有限群,f是一个群类.群G的子群H称为在G中是f可补充的,如果存在G的子群T使得G=HT且(H∩T)HG/HG含于G/HG的f超中心Z∞^f(G/Ha)中.主要利用f可补充子群进一步研究群的结构,得到了一些关于P幂零群的新判别准则.
Let G be a finite group and f a class of groups. A subgroup H of G is said to be f supplemented in G if there exists a subgroup T of G such that G=HT and (H∩T)HG/HG is contained in the f hypercenter Z∞^f (G/HG) of G/HG. Here, f-supplemented subgroups were used to study the structure of finite groups and some new criteria of p-nilpotent groups were obtained.