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PRIMITIVE SUBGROUPS AND PST-GROUPS
Published online by Cambridge University Press: 18 July 2013
Abstract
All groups considered in this paper are finite. A subgroup $H$ of a group
$G$ is called a primitive subgroup if it is a proper subgroup in the intersection of all subgroups of
$G$ containing
$H$ as a proper subgroup. He et al. [‘A note on primitive subgroups of finite groups’, Commun. Korean Math. Soc. 28(1) (2013), 55–62] proved that every primitive subgroup of
$G$ has index a power of a prime if and only if
$G/ \Phi (G)$ is a solvable PST-group. Let
$\mathfrak{X}$ denote the class of groups
$G$ all of whose primitive subgroups have prime power index. It is established here that a group
$G$ is a solvable PST-group if and only if every subgroup of
$G$ is an
$\mathfrak{X}$-group.
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- Research Article
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- Copyright
- Copyright ©2013 Australian Mathematical Publishing Association Inc.
References
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