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TitleSome pseudovariety joins involving locally trivial semigroups
Author(s)Costa, José Carlos
Join of pseudovarieties
Issue date2002
PublisherSpringer Verlag
JournalSemigroup Forum
Abstract(s)This paper is concerned with the computation of pseudovariety joins involving the pseudovariety LI of locally trivial semigroups. We compute, in particular, the join of LI with any subpseudovariety of CRmN, the Mal'cev product of the pseudovariety of completely regular semigroups and the pseudovariety of nilpotent semigroups. Similar studies are conducted for the pseudovarieties K, D and N, where K (resp. D) is the pseudovariety of all semigroups S such that eS = e (resp. Se = e ) for each idempotent e of S.
Publisher versionThe original publication is available at
AccessOpen access
Appears in Collections:CMAT - Artigos em revistas com arbitragem / Papers in peer review journals

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