- algebra of varieties
- мат. алгебра многообразий
Большой англо-русский и русско-английский словарь. 2001.
algebra of varieties
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Band (algebra) — In mathematics, a band is a semigroup in which every element is idempotent (in other words equal to its own square). The lattice of varieties of bands was described independently by Birjukov, Fennemore and Gerhard. Semilattices, left zero bands,… … Wikipedia
