On lattices of varieties of universal algebras
J. Płonka (1987)
Colloquium Mathematicae
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Displaying similar documents to “On varieties of orgraphs”
On lattices of varieties of universal algebras
Varieties and finite closure conditions
John T. Baldwin, Joel Berman (1976)
Colloquium Mathematicae
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On varieties of completely regular semigroups III.
Libor Polák (1988)
Semigroup forum
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On varieties of completely regular semigroups II.
L. Polák (1987)
Semigroup forum
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On covers in the lattice of representable -varieties
N.Ya. Medvedev, S. V. Morozova (1998)
Czechoslovak Mathematical Journal
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The dimension of a variety
Ewa Graczyńska, Dietmar Schweigert (2007)
Discussiones Mathematicae - General Algebra and Applications
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Derived varieties were invented by P. Cohn in [4]. Derived varieties of a given type were invented by the authors in [10]. In the paper we deal with the derived variety of a given variety, by a fixed hypersubstitution σ. We introduce the notion of the dimension of a variety as the cardinality κ of the set of all proper derived varieties of V included in V. We examine dimensions of some varieties in the lattice of all varieties of a given type τ. Dimensions of varieties of lattices...
The lattice of varieties of fibered automata
Anna Mućka (2006)
Discussiones Mathematicae - General Algebra and Applications
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The class of all fibered automata is a variety of two-sorted algebras. This paper provides a full description of the lattice of varieties of fibred automata.
A reduction theorem for ring varieties whose subvariety lattice is distributive
Mikhail V. Volkov (2010)
Discussiones Mathematicae - General Algebra and Applications
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We prove a theorem (for arbitrary ring varieties and, in a stronger form, for varieties of associative rings) which basically reduces the problem of a description of varieties with distributive subvariety lattice to the case of algebras over a finite prime field.
On the Classification of Toric Fano Varieties.
G. Ewald (1988)
Discrete & computational geometry
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Schubert varieties and standard monomial theory
V. Lakshmibai (1990)
Banach Center Publications
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Varieties with small dual varieties, I.
L. Ein (1986)
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On Varieties Whose Degree is Small with Respect to Codimension.
Paltin Ionescu (1985)
Mathematische Annalen
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