We prove that G is a group in which all noncyclic subgroups are TI-subgroups if and only if all noncyclic subgroups of G are normal in G. Moreover, we classify groups in which all subgroups of even order are TI-subgroups.
|Journal||Miscolc Mathematical Notes|
|Publication status||Published - 2013|
- Noncyclic subgroup
- Subgroup of even order