Abstract
A subgroup H of a group G is said to permute with a subgroup K of G if HK is a subgroup of G. H is said to be permutable (resp. S-permutable) if it permutes with all the subgroups (resp. Sylow subgroups) of G. Finite groups in which permutability (resp. S-permutability) is a transitive relation are called PT-groups (resp. PST-groups). PT-, PST- and T-groups, or groups in which normality is transitive, have been extensively studied and characterised. Kaplan [Kaplan G., On T-groups, supersolvable groups, and maximal subgroups, Arch. Math. (Basel), 2011, 96(1), 19–25] presented some new characterisations of soluble T-groups. The main goal of this paper is to establish PT- and PST-versions of Kaplan’s results, which enables a better understanding of the relationships between these classes.
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Ballester-Bolinches, A., Beidleman, J.C., Esteban-Romero, R. et al. Maximal subgroups and PST-groups. centr.eur.j.math. 11, 1078–1082 (2013). https://doi.org/10.2478/s11533-013-0222-z
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DOI: https://doi.org/10.2478/s11533-013-0222-z