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Finite groups with some CAP-subgroups
Authors:Jianjun Liu  Shirong Li  Zhengcai Shen  Xiaochun Liu
Affiliation:1. Department of Mathematics, Shanghai University, Shanghai, 200444, P. R. China
2. Department of Mathematics, Guangxi University, Nanning, Guangxi, 530004, P. R. China
3. School of Mathematical Sciences, Suzhou University, Suzhou, 215006, P. R. China
Abstract:Let G be a finite group. A subgroup H of G is called a CAP-subgroup if the following condition is satisfied: for each chief factor K/L of G either HK = HL or H ∩ K = H ∩ L. Let p be a prime factor of |G| and let P be a Sylow p-subgroup of G. If d is the minimum number of generators of P then there exists a family of maximal subgroups of P, denoted by M d (P)={P 1, P 2,…, P d } such that ∩ i=1 d P i = ?(P). In this paper, we investigate the group G satisfying the condition: every member of a fixed M d (P) is a CAP-subgroup of G. For example, if, in addition, G is p-solvable, then G is p-supersolvable.
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