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JOURNALS // Matematicheskie Zametki // Archive
Mat. Zametki, 1977 Volume 21, Issue 6, Pages 865–872 (Mi mzm8018)
This article is cited in 8 papers

Ašvariety of semigroups without an irreducible basis for identities

A. N. Trakhtman

Ural Polytechnic Institute

Abstract: An example of a variety of semigroups not having an irreducible basis for identities is given. Also a variety of semigroups, the lattice of subvarieties of which contains a nonidentity element without any coverings, is constructed.

UDC: 519.4

Received: 11.11.1975


 English version: Mathematical Notes, 1977, 21:6, 487–490

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