Covering relation for equational theories of commutative semigroups

[摘要] In this paper we describe the covering relation in the lattice of the equational theories of commutative semigroups. We use the description and the methods worked out in an earlier paper by the second author [1994, Trans. Amer. Math. Sec. 342, 275-306]. (C) 2000 Academic Press.

[发布日期] 2000-10-15

[关键词] covering relation;commutative semigroup;lattice of varieties;equational theory