On algebras whose congruences have a class that is a subuniverse

We study algebras and varieties where every non-trivial congruence has some class being a non-trivial subuniverse of the algebra in question. Then we focus on algebras where this non-trivial class is a unique non-singleton class of a congruence. In particular, we investigate Rees algebras, pseudo-Re...

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Bibliographic Details
Main Authors: Ivan Chajda, Helmut Länger
Format: Article
Language:English
Published: Miskolc University Press 2025-01-01
Series:Miskolc Mathematical Notes
Online Access:http://mat76.mat.uni-miskolc.hu/mnotes/article/4526
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