Congruence kernels of orthoimplication algebras.
Chajda, I., Halaš, R., Länger, H. (2007)
Acta Mathematica Universitatis Comenianae. New Series
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Displaying similar documents to “On subdirectly irreducible Steiner loops of cardinality .”
Congruence kernels of orthoimplication algebras.
Weak congruence identities at 0.
Chajda, Ivan, Šešelja, Branimir, Tepavčević, Andreja (2002)
Novi Sad Journal of Mathematics
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Solutions of some classes of congruences
Eugen Vedral (2006)
The Teaching of Mathematics
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On -permutable and distributive at 0 varieties.
Chajda, I. (1999)
Acta Mathematica Universitatis Comenianae. New Series
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Relatively pseudocomplemented directoids
Ivan Chajda (2009)
Commentationes Mathematicae Universitatis Carolinae
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The concept of relative pseudocomplement is introduced in a commutative directoid. It is shown that the operation of relative pseudocomplementation can be characterized by identities and hence the class of these algebras forms a variety. This variety is congruence weakly regular and congruence distributive. A description of congruences via their kernels is presented and the kernels are characterized as the so-called -ideals.
On some classes of good quotient relations.
Bošnjak, Ivica, Madarász, Rozália (2002)
Novi Sad Journal of Mathematics
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On the subsemilattices of first-order definable and openly first-order definable congruences of the congruence lattice of a universal algebra.
Pinus, A.G. (2006)
Sibirskij Matematicheskij Zhurnal
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General algebraic geometry and formal concept analysis.
Becker, T. (1999)
Acta Mathematica Universitatis Comenianae. New Series
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Separation properties in congruence lattices of lattices
Miroslav Ploščica (2000)
Colloquium Mathematicae
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We investigate the congruence lattices of lattices in the varieties . Our approach is to represent congruences by open sets of suitable topological spaces. We introduce some special separation properties and show that for different n the lattices in have different congruence lattices.