A SPECIAL KIND OF PRINCIPAL CONGRUENCES ON MS-ALGEBRAS

作     者：罗从文 

作者机构：Department of Mathematics Three Gorges University 

出 版 物：《Acta Mathematica Scientia》 (数学物理学报（B辑英文版）)

年 卷 期：2008年第28卷第2期

页      面：315-320页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 

基　　金：the Natural Science Foundation of Hubei Province 

主　　题：MS-algebra principal congruence MS-space 

摘      要：In this article, for any a in the MS-algebra L, the author considers the con- gruence of the form defined by （x,y） ∈θa→←x∧a°° = y ∧a° and x ∨ a°° = y ∨ a°°. A characterization of subdirectly irreducible MS-algebras is given and it is also proved that the union of two principal congruences having this form is a principal congruence if and only if L ∈ K2 ∨ K3.