Complete Semigroups of Binary Relations Defined by Semilattices of the Class Z−Elementary X−Semilattice of Unions
In this paper we investigate idempotents of complete semigroups of binary relations defined by semilattices of the class Z−elementary X−semilattice of unions. For the case where X is a finite set we derive formulas by calculating the numbers of idempotents of the respective semigroup.
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Published in | Sarajevo journal of mathematics Vol. 11; no. 1; pp. 17 - 35 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
16.05.2025
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Online Access | Get full text |
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Summary: | In this paper we investigate idempotents of complete semigroups of binary relations defined by semilattices of the class Z−elementary X−semilattice of unions. For the case where X is a finite set we derive formulas by calculating the numbers of idempotents of the respective semigroup. |
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ISSN: | 1840-0655 2233-1964 |
DOI: | 10.5644/SJM.11.1.02 |