In this paper,we obtain some results of F π-covering subgroups of a finite π-solvable group by using the concept of π-local formation in .
利用 [1]中定义的π -局部群系Fπ,得到了有限π -可解群的Fπ-覆盖子群的一些结果 。
The supersolvablity and nilpotency of the finite group G are characterized using the concept of cover-avoiding subgroups.
利用覆盖-远离子群的概念研究了群的超可解性和幂零性。