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Meet infinite distributivity for congruence lattices of direct sums of algebras

  • Heghine Ghumashyan and Jaroslav Guričan EMAIL logo
Published/Copyright: March 28, 2022
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Abstract

We study meet infinite distributivity (MID) in congruence lattices of direct sums of algebras. The main result of this note is that in a congruence distributive variety the MID of congruence lattices is preserved by direct sums of algebras, it means that the congruence lattice of a direct sum of algebras is MID if and only if a congruence lattice of every constituent algebra is MID.


The first author thanks the NSP of the Slovak republic, SAIA and the Comenius University Bratislava for the support. The second author was supported by VEGA grant No. 1/0333/17 of Slovak Republic.


  1. (Communicated by Miroslav Ploščica)

Acknowledgement

We thank the anonymous referee for the detailed review and suggestions which helped to improve our presentation.

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Received: 2020-10-21
Accepted: 2021-05-02
Published Online: 2022-03-28
Published in Print: 2022-04-26

© 2022 Mathematical Institute Slovak Academy of Sciences

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