Schreier varieties of n-semigroups (Q800499)
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scientific article; zbMATH DE number 3875562
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Schreier varieties of n-semigroups |
scientific article; zbMATH DE number 3875562 |
Statements
Schreier varieties of n-semigroups (English)
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1984
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A variety U of universal algebras is said to be a Schreier variety if every subalgebra of a U-free algebra is free in this class. Let U be a Schreier variety of n-semigroups consisting not only of n-groups. Then U is defined by one of the following identities: \(x_ 1...x_ n=y_ 1...y_ n\); \(x_ 1...x_ n=x_ n\); \(x_ 1...x_ n=x_ 1\).
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Schreier variety of n-semigroups
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identities
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