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Currently displaying 1 – 20 of 33

Order by Relevance | Title | Year of publication

Arithmeticity at 0

Jaromír Duda — 1987

Czechoslovak Mathematical Journal

Announcements of new results

Jaromír Duda — 1995

Commentationes Mathematicae Universitatis Carolinae

Coherence and weak coherence in the square of algebras

Jaromír Duda — 1992

Czechoslovak Mathematical Journal

Factorable congruences and factorable congruence blocks on powers of a finite algebra

Jaromír Duda — 1992

Czechoslovak Mathematical Journal

Subcoherent algebras

Jaromír Duda — 1993

Czechoslovak Mathematical Journal

Identities for direct decomposability of congruences can be written in two variables

Jaromír Duda — 1987

Commentationes Mathematicae Universitatis Carolinae

Varieties of subregular algebras are definable by a Mal'cev condition

Jaromír Duda — 1981

Commentationes Mathematicae Universitatis Carolinae

Mal'cev conditions for congruence-regular and congruence-permutable varieties

Jaromír Duda — 1979

Commentationes Mathematicae Universitatis Carolinae

Congruences generated by filters

Jaromír Duda — 1980

Commentationes Mathematicae Universitatis Carolinae

Coherence implies congruence-regularity (a local version)

Jaromír Duda — 1989

Commentationes Mathematicae Universitatis Carolinae

Announcements of new results

Jaromír Duda — 1996

Commentationes Mathematicae Universitatis Carolinae

Conditions for factorable relations

Jaromír Duda — 1991

Czechoslovak Mathematical Journal

Mal'cev conditions for directly decomposable compatible relations

Jaromír Duda — 1989

Czechoslovak Mathematical Journal

Relation products of congruences and factor congruences

Jaromír Duda — 1991

Czechoslovak Mathematical Journal

Coherence in varieties of algebras

Jaromír Duda — 1989

Czechoslovak Mathematical Journal

Tolerances on powers of a finite algebra

Jaromír Duda — 1992

Mathematica Bohemica

It is shown that any power $A^{n}, n \geq 2$ , of a finite $k$ -element algebra $A, k \geq 2$ , has factorable tolerances whenever the power $A^{4 k^{2} - 3 k}$ has the same property.

Congruence restrictions on axes

Jaromír Duda — 1992

Mathematica Bohemica

We give Mal’cev conditions for varieties 4V4 whose congruences on the product $A \times B, A, B \in V$ , are determined by their restrictions on the axes in $A \times B$ .

Varieties with rectangular ideals

Jaromír Duda — 1991

Mathematica Slovaca

Congruences on products in varieties satisfying the CEP

Jaromír Duda — 1986

Mathematica Slovaca

Principal congruence relations and principal tolerances on varieties of lattices

Jaromír Duda — 1989

Mathematica Slovaca

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