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Questions about the branch of algebra that deals with groups.

4 votes
1 answer
294 views

Finite groups of order $n$ having exactly $n$ subgroups

Is it known a characterization of finite groups of order $n$ having exactly $n$ subgroups? A supplementary question: are there abelian groups other than the trivial group and $\mathbb{Z}_2$ with thi …
Joachim Grieg's user avatar