reductive closed subgroup [数] 可简约闭子群
closed normal subgroup [数] 闭正规子群
closed invariant subgroup [数] 闭不变子群
closed Lie subgroup 闭子李群
closed symelectic subgroup 闭的辛子群
closed convex l-subgroup 闭凸l子群
In this paper, closed groups and proper subgroup are classified.
本文对闭群和真子群进行了分类。
The finite inner-(2,2')-closed groups were classified and this class of finite groups with every non-maximal proper subgroup of even order of(2,2')-closed were also classified.
本文首先分类了内-（2，2＇）-闭群，再对每个非极大偶阶真子群为（2，2＇）-闭的不可解群进行了分类。
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