Supernilpotent semigroups

Supernilpotent semigroups

Regular abelian semigroups are isomorphic to a direct product of an abelian group and a rectangular band (Warne, 1994). Seeking for a similar result for nilpotency, solvability, and supernilpotency of regular semigroups, we obtain that an analogous statement is true only in orthodox semigroups. We p...

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Veröffentlicht in:Portugaliae mathematica 2024-02, Vol.81 (3), p.307-320
Hauptverfasser: Radović, Jelena, Mudrinski, Nebojša
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Mudrinski, Nebojša
description Regular abelian semigroups are isomorphic to a direct product of an abelian group and a rectangular band (Warne, 1994). Seeking for a similar result for nilpotency, solvability, and supernilpotency of regular semigroups, we obtain that an analogous statement is true only in orthodox semigroups. We provide an example that shows that the same does not have to be true in regular semigroups that are not orthodox.
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title Supernilpotent semigroups
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