A note on finite groups with few TI-subgroups

Jiangtao Shi, Jingjing Huang, Cui Zhang
2018 International Electronic Journal of Algebra  
In [Comm. Algebra, 43(2015) , [2680][2681][2682][2683][2684][2685][2686][2687][2688][2689], finite groups all of whose metacyclic subgroups are TI-subgroups have been classified by S. Li, Z. Shen and N. Du. In this note we investigate a finite group all of whose non-metacyclic subgroups are TI-subgroups. We prove that G is a group all of whose non-metacyclic subgroups are TI-subgroups if and only if all nonmetacyclic subgroups of G are normal. Furthermore, we show that a group all of whose
more » ... yclic subgroups are TI-subgroups has a Sylow tower. (2010) : 20D10 Mathematics Subject Classification
doi:10.24330/ieja.373640 fatcat:vsevagewbvdtrjuybur4er74pq