The varieties of semilattice-ordered semigroups satisfying x3 ≈ x and xy ≈ yx

被引:2
|
作者
Ren, Miaomiao [1 ]
Zhao, Xianzhong [1 ]
机构
[1] Northwest Univ, Sch Math, Xian 710127, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Semilattice-ordered Burnside semigroup; Lattice; Subdirectly irreducible member; Variety; 0-Group; IDEMPOTENT SEMIRINGS; SUBVARIETIES;
D O I
10.1007/s10998-016-0116-5
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The aim of this paper is to study the varieties of semilattice-ordered Burnside semigroups satisfying x(3) approximate to x and xy approximate to yx. It is shown that the collection of all such varieties forms a distributive lattice of order 9. Also, all of them are finitely based and finitely generated. This gives a generalization and expansion of the results obtained by McKenzie and Romanowska (Contrib Gen Algebra Proc Klagenf Conf 1978 1:213-218, 1979).
引用
收藏
页码:158 / 170
页数:13
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