设G是限群,称子群H在G中c-正规,若存在K△G,使得G=冰且H∩K≤HG.本文利用子群的c-正规性和一般真子群的θ-子群偶刻画了有限群的可解性.
Let G be a finite group, a subgroup H is said to be c- normal in G if there exists a normal subgroup K of G such that G = HK and HH∩K≤HG, where HG is the maximal normal subgroup of G contained in H. In this paper, we give some sufficient conditions of finite solvable groups by the c-normality of some subgroups and theta pairs of proper subgroups.