Principal congruences of tetravalent modal algebras (Q1059074)
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scientific article; zbMATH DE number 3902647
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Principal congruences of tetravalent modal algebras |
scientific article; zbMATH DE number 3902647 |
Statements
Principal congruences of tetravalent modal algebras (English)
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1985
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The author proves that tetravalent modal algebras, i.e. algebras belonging to the variety T generated by the four-element, subdirectly irreducible De Morgan algebra \(S_ 4\), form a discriminator variety. The main result of this paper is a characterization for principal congruences in terms of principal filters.
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congruence relation
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tetravalent modal algebras
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De Morgan algebra
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discriminator variety
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principal congruences
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principal filters
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