Quasiorder lattices in congruence modular varieties

Gyenizse, Gergő: Quasiorder lattices in congruence modular varieties. In: Acta scientiarum mathematicarum 86. pp. 3-10. (2020)

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Some elements of tame congruence theory can be applied to quasiorder lattices instead of congruence lattices. In particular, it is possible to consider minimal sets of an algebra with respect to one of its prime quasiorder quotients. It turns out that if a finite algebra is in a congruence modular variety, then it is minimal with respect to a quasiorder quotient iff it is minimal with respect to a congruence quotient — in which case it is either a two-element algebra, or has a Mal’tsev-polynomial. As an application of this fact, we prove that if an algebra is in a congruence modular variety, its congruence and quasiorder lattices satisfy the same identities.

Item Type: Article
Heading title: Algebra
Journal or Publication Title: Acta scientiarum mathematicarum
Date: 2020
Number: 86
ISSN: 2064-8316
Page Range: pp. 3-10
Related URLs: http://acta.bibl.u-szeged.hu/69543/
DOI: https://doi.org/10.14232/actasm-018-024-4
Uncontrolled Keywords: Matematika, Algebra
Additional Information: Bibliogr.: 10. p. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.01. Mathematics
Date Deposited: 2020. Jul. 27. 10:25
Last Modified: 2020. Jul. 27. 10:25
URI: http://acta.bibl.u-szeged.hu/id/eprint/69359

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