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08-XX General algebraic systems

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Displaying 1 – 20 of 323

On 2-homogeneity of monounary algebras

Danica Jakubíková-Studenovská (2003)

Czechoslovak Mathematical Journal

Fraïssé introduced the notion of a $k$ -set-homogeneous relational structure. In the present paper the following classes of monounary algebras are described: $𝒮 h_{2} (S)$ , $𝒮 h_{2} (S^{c})$ , $𝒮 h_{2} (P^{c})$ —the class of all algebras which are 2-set-homogeneous with respect to subalgebras, connected subalgebras, connected partial subalgebras, respectively, and $ℋ_{2} (S)$ , $ℋ_{2} (S^{c})$ , $ℋ_{2} (P^{c})$ —the class of all algebras which are 2-homogeneous with respect to subalgebras, connected subalgebras, connected partial subalgebras, respectively.

On 3-semigroups and 3-groups polynomial-derived from integral domains.

K. Glazek, B. Gleichgewicht (1985)

Semigroup forum

On a cancellation law for monounary algebras.

Jakubíková-Studenovská, Danica (2003)

Mathematica Bohemica

On a cancellation law for monounary algebras

Danica Jakubíková-Studenovská (2003)

Mathematica Bohemica

In this paper we investigate the validity of a cancellation law for some classes of monounary algebras.

On a certain construction of lattice expansions

Hector Gramaglia (2004)

Mathematica Bohemica

We obtain a simple construction for particular subclasses of several varieties of lattice expansions. The construction allows a unified approach to the characterization of the subdirectly irreducible algebras

On a characterization of the lattice of subsystems of a transition system.

Mavoungou, J.P., Nkuimi-Jugnia, C. (2006)

International Journal of Mathematics and Mathematical Sciences

On a class of groupoids

Tomáš Kepka (1981)

Acta Universitatis Carolinae. Mathematica et Physica

On a class of subdirectly irreducible groupoids

Tomáš Kepka (1981)

Acta Universitatis Carolinae. Mathematica et Physica

On a conjecture of Rhodes.

J.E. Pin (1989)

Semigroup forum

On a Generalization of Permutable Equivalence Relations

Hilda Draškovičová (1972)

Matematický časopis

On a mechanism of defining morphisms in concrete categories

L. Kučera, A. Pultr (1972)

Cahiers de Topologie et Géométrie Différentielle Catégoriques

On a modification of axioms of general relations

Jiří Karásek (2001)

Mathematica Bohemica

Basic concepts concerning binary and ternary relations are extended to relations of arbitrary arities and then investigated.

On a modification of relational axioms

Jiří Karásek (1992)

Archivum Mathematicum

On a multiplication of semigroup varieties.

Ju.G. Koselev (1992)

Semigroup forum

On a Non-Abelian Variety of Groups which are Symmetric Algebras.

Ernest Plonka (1994)

Mathematica Scandinavica

On a power of relational structures

Vítězslav Novák (1985)

Czechoslovak Mathematical Journal

On a problem of B. Zelinka

V. R. Chandran (1987)

Czechoslovak Mathematical Journal

On a problem of B. Zelinka, II

V. R. Chandran (1987)

Czechoslovak Mathematical Journal

On a problem of saturation of certain reduced direct products

A. Laradji, Janusz Pawlikowski (1991)

Colloquium Mathematicae

On a Question of J. Hashimoto

Milan Kolibiar, Tamara Marcisová (1974)

Matematický časopis

Currently displaying 1 – 20 of 323

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