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Displaying similar documents to “Distinguishing subsets in semilattices”

Subdirectly irreducible sectionally pseudocomplemented semilattices

Radomír Halaš, Jan Kühr (2007)

Czechoslovak Mathematical Journal

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Sectionally pseudocomplemented semilattices are an extension of relatively pseudocomplemented semilattices—they are meet-semilattices with a greatest element such that every section, i.e., every principal filter, is a pseudocomplemented semilattice. In the paper, we give a simple equational characterization of sectionally pseudocomplemented semilattices and then investigate mainly their congruence kernels which leads to a characterization of subdirectly irreducible sectionally pseudocomplemented...

Radicals of Green’s relations

Stojan Bogdanović, Miroslav Ćirić (1999)

Czechoslovak Mathematical Journal

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Some structural descriptions of semigroups in which the radicals of Green’s relations are semilattice congruences will be given.