Finite groups in which every subgroup is c-normal
Finite groups in which every subgroup is c-normal
In this paper, we study the structure of nite CN-groups, which are groups with every subgroup c-normal. We obtain the following results: A group <italic>G</italic> is a CN-group if and only if each subgroup of <italic>G<sup>∈</sup></italic> is normal in <italic>G</italic>. A group <italic>G</italic> is a CN-group if and only if …