Influence of complemented subgroups on the structure of finite groups

Document Type : Research Paper

Author

Faculty of Mathematics, University of Bialystok, 15-245 Bialystok, Ciolkowskiego 1M, Poland

Abstract

P‎. ‎Hall proved that a finite group $G$ is supersoluble with elementary abelian Sylow subgroups if and only if every subgroup of $G$ is complemented in $G$‎. ‎He called such groups complemented‎. ‎A‎. ‎Ballester-Bolinches and X‎. ‎Guo‎ ‎established the structure of minimal non-complemented groups‎. ‎We give the classification of finite non-soluble groups‎ ‎all of whose second maximal subgroups are complemented groups‎. ‎We also prove that every finite group with less than‎ ‎$21$ non-complemented non-minimal $\{2,3,5\}$-subgroups is soluble‎.

Keywords

References

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History

  • Receive Date: 10 September 2019
  • Revise Date: 13 December 2019
  • Accept Date: 16 December 2019
  • Published Online: 01 June 2021

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