Finite 2-groups with some prescribed minimal nonabelian subgroups

摘要

We determine up to isomorphism finite nonabelian 2-groups all of whose minimal nonabelian subgroups, except one, are isomorphic to D-8 (Theorem 1) and also, we determine finite nonabelian 2-groups all of whose minimal nonabelian subgroups, except one, are isomorphic to Q(8) (Theorem 2).