Varieties with a countable number of subquasivarieties (Q1063050)
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scientific article; zbMATH DE number 3914396
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Varieties with a countable number of subquasivarieties |
scientific article; zbMATH DE number 3914396 |
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Varieties with a countable number of subquasivarieties (English)
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1984
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The lattice of subquasivarieties of an arbitrary quasivariety of universal algebras is called its Q-lattice. In the present paper varieties of rings and semigroups with at most countable Q-lattices are studied. The author succeeds in describing all varieties of locally finite semigroups and all varieties of rings having a countable Q- lattice. The paper is a sequel to the author's publication in Sib. Mat. Zh. 22, No.6, 168-187 (1981; Zbl 0491.08011).
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lattice of subquasivarieties
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varieties of rings
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varieties of locally finite semigroups
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