We discuss how meaningful is the concept of an epimaximal Ӿ -subgroup dual to the concept of a submaximal Ӿ -subgroup introduced by H. Wielandt. Also a result of Wielandt is refined which characterizes the behavior of maximal Ӿ -subgroups under homomorphisms.
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Supported by SB RAS Fundamental Research Program I.1.1, project No. 0314-2016-0001.
Translated from Algebra i Logika, Vol. 58, No. 6, pp. 714-719, November-December, 2019.
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Revin, D.O. Submaximal and Epimaximal Ӿ -Subgroups. Algebra Logic 58, 475–479 (2020). https://doi.org/10.1007/s10469-020-09567-y
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DOI: https://doi.org/10.1007/s10469-020-09567-y