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On \(q^*\)-bisimple IC semigroups of type-\(E\). - MaRDI portal

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On \(q^*\)-bisimple IC semigroups of type-\(E\). (Q1014786)

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scientific article; zbMATH DE number 5549508
Language Label Description Also known as
English
On \(q^*\)-bisimple IC semigroups of type-\(E\).
scientific article; zbMATH DE number 5549508

    Statements

    On \(q^*\)-bisimple IC semigroups of type-\(E\). (English)
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    29 April 2009
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    Let \(S\) be a quasi-adequate semigroup, i.e., each \(\mathcal L^*\)-class and each \(\mathcal R^*\)-class of \(S\) contains at least one of the idempotents of \(S\) and its set of idempotents forms a semigroup \(E(S)\). \(S\) is called type-\(E\) if \(E(S)\) is a direct product of a rectangular band \(E\) and an \(\omega\)-chain. An IC (idempotent-connected) quasi-adequate \(^*\)-bisimple (i.e., there is precisely one \(\mathcal D^*\)-class and one regular \(\mathcal D\)-class) semigroup of type-\(E\) is called a \(q^*\)-bisimple IC semigroup of type-\(E\) mentioned in the title of the paper. Such semigroups are characterized by means of so called generalized Bruck-Reilly extensions.
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    IC quasi-adequate semigroups
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    rectangular bands
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    chains
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    idempotents
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    Bruck-Reilly extensions
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    Green relations
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