Valuations of structures
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Josef Mlček (1979)
Commentationes Mathematicae Universitatis Carolinae
K. Denecke (1986)
Beiträge zur Algebra und Geometrie = Contributions to algebra and geometry
Jaromír Duda (1986)
Časopis pro pěstování matematiky
Priestley, H.A., Santos, R. (1998)
Portugaliae Mathematica
J. Gałuszka (1999)
Colloquium Mathematicae
We give an equational description of all idempotent groupoids with at most three essentially n-ary term operations.
B. Csákány, L. Megyesi (1979)
Colloquium Mathematicae
W. Charles Holland (1979)
Czechoslovak Mathematical Journal
R. Padmanabhan, H. Lakser, B. Wolk (1995)
Semigroup forum
Börner, Ferdinand (1996)
Beiträge zur Algebra und Geometrie
Jaromír Duda (1981)
Commentationes Mathematicae Universitatis Carolinae
Ivan Chajda, Jaromír Duda (1989)
Mathematica Slovaca
Ivan Chajda, Radomír Halaš (2007)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
A diagrammatic scheme characterizing congruence distributivity of congruence permutable algebras was introduced by the first author in 2001. It is known under the name Triangular Scheme. It is known that every congruence distributive algebra satisfies this scheme and an algebra satisfying the Triangular Scheme which is not congruence distributive was found by E. K. Horváth, G. Czédli and the autor in 2003. On the other hand, it was an open problem if a variety of algebras satisfying the Triangular...
Ivan Chajda (2001)
Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Ivan Chajda (1992)
Czechoslovak Mathematical Journal
Ivan Chajda (1985)
Archivum Mathematicum
Klaus Kaiser (1975)
Archiv für mathematische Logik und Grundlagenforschung
Zdeněk Rozenský (1979)
Časopis pro pěstování matematiky
Teo Sturm (1972)
Czechoslovak Mathematical Journal
М.Х. Клин (1972)
Matematiceskie issledovanija
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