Meanders in lattices.
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Ladislav Beran (1995)
Collectanea Mathematica
Ivan Chajda, Bohdan Zelinka (1978)
Archivum Mathematicum
Ján Jakubík (1991)
Czechoslovak Mathematical Journal
René Fourneau (1982)
Commentationes Mathematicae Universitatis Carolinae
Ivan Chajda, Petr Emanovský (1995)
Mathematica Bohemica
Let be an algebraic structure of type and a set of open formulas of the first order language . The set of all subsets of closed under forms the so called lattice of -closed subsets of . We prove various sufficient conditions under which the lattice is modular or distributive.
Abu Saleh Abdun Noor, William H. Cornish (1986)
Commentationes Mathematicae Universitatis Carolinae
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