Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
Lee classes for pseudocomplemented semilattices, revisited - MaRDI portal

Lee classes for pseudocomplemented semilattices, revisited (Q535101)

From MaRDI portal





scientific article; zbMATH DE number 5886742
Language Label Description Also known as
English
Lee classes for pseudocomplemented semilattices, revisited
scientific article; zbMATH DE number 5886742

    Statements

    Lee classes for pseudocomplemented semilattices, revisited (English)
    0 references
    11 May 2011
    0 references
    The \(n\)-th Lee class is the quasivariety (actually a variety) generated by the pseudocomplemented distributive lattice obtained from the Boolean algebra \(B_n\) with \(n\) atoms by adjoining a new greatest element \(1\notin B_n\). It may be also considered as a (proper) quasivariety of pseudocomplemented semilattices. The main result of the paper under review (Theorem 1.1) asserts that each Lee class may be axiomatized by a single quasi-identity that, syntactically and semantically, has a simple description.
    0 references
    pseudocomplemented semilattice
    0 references
    pseudocomplemented distributive lattice
    0 references
    Lee class
    0 references
    0 references
    0 references
    0 references

    Identifiers