Characterizations of weakly modular lattices
Iqbalunnisa (1966)
Fundamenta Mathematicae
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Displaying similar documents to “Proper congruences do not imply a modular congruence lattice”
Characterizations of weakly modular lattices
Operations on graphs determining congruences on graphs
Juhani Nieminen (1978)
Archivum Mathematicum
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On congruences of -sets
Boris M. Vernikov (1997)
Commentationes Mathematicae Universitatis Carolinae
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We describe -sets whose congruences satisfy some natural lattice or multiplicative restrictions. In particular, we determine -sets with distributive, arguesian, modular, upper or lower semimodular congruence lattice as well as congruence -permutable -sets for .
Graphical Compositions and Weak Congruences
Miroslav Ploščica (1994)
Publications de l'Institut Mathématique
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An application of commutator theory to incidence algebras.
Paolo Lipparini (1984)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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Usando la teoria del commutatore in algebra universale, si dimostra che una larga classe di algebre di incidenza sono polinomialmente equivalenti a moduli su anelli con divisione.