Semipermutable subgroup

In mathematics, in algebra, in the realm of group theory, a subgroup $H$ of a finite group $G$ is said to be semipermutable if $H$ commutes with every subgroup $K$ whose order is relatively prime to that of $H$.

Clearly, every permutable subgroup of a finite group is semipermutable. The converse, however, is not necessarily true.

External links

* [http://www.pphmj.com/article.php?act=art_abstract_show&art_id=593&search= The semipermutable subgroup and finite nilpotent group]
* The Influence of semipermutable subgroups on the structure of finite groups