本文决定了内交换子群均同阶的亚循环2群以及非正规内交换子群的正规闭包是极大子群的亚循环p群.从而解决了Berkovich提出的两个问题.
We classify finite metacyclic p-groups all of whose minimal non-abelian sub- groups have the same order, and finite metacyclic p-groups all of whose normal closures of non-normal minimal non-abelian subgroups are maximal. This solves two problems proposed by Berkovich.