利用共轭置换子群的概念来研究有限群的可解性问题,获得了一个群为可解群的若干新刻画.特别,得到了:①若M〈·G,且肘的极大子群均在G中共轭置换,则G可解;②设群G无截断PSL2(7),M〈·G,且|G:M|=p^a,若M的2-极大子群均在G中共轭置换,则G可解.
The solvability of finite groups with some conjugate-permutable subgroups is investigated. Especially,the following results are obtained: (1) If M 〈 · G and the maximal subgroup of M are conjugate-permutable in G, then G is solvable. (2) Suppose that G is no section isomorphic to PSL2(7). If M 〈 · G with | G: M | = p……a and the 2-maximal subgroups of M are conjugate-permutable in G, then G is solvable.