FINITE GROUPS IN WHICH EVERY NON-MAXIMAL PROPER SUBGROUPOF EVEN ORDER IS 2-CLOSED
Citation：
Li Shirong.FINITE GROUPS IN WHICH EVERY NON-MAXIMAL PROPER SUBGROUPOF EVEN ORDER IS 2-CLOSED[J].Chinese Annals of Mathematics B,1983,4(2):199~206
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Authors：
Li Shirong;
Abstract：
In this paper the author classifies the finite groups satisfying the following condition:
(A) every non-maximal proper subgroup of even order is 2-closed.
Particularly, the following theorem is shown: $${A_5}$$ and SL(2,5) are the only non-solvable groups satisfying the condition (A).
