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完备De Morgan代数上弱余拓扑的确定
引用本文:张雄伟,赵虎,李生刚. 完备De Morgan代数上弱余拓扑的确定[J]. 纺织高校基础科学学报, 2010, 23(2): 144-150
作者姓名:张雄伟  赵虎  李生刚
作者单位:1. 陕西师范大学,数学与信息科学学院,陕西,西安,710062;榆林学院,数学与应用数学系,陕西,榆林,719000
2. 陕西师范大学,数学与信息科学学院,陕西,西安,710062
基金项目:国家自然科学基金资助项目 
摘    要:证明了对每个给定的完备De Morgan代数L,可以在WI(L)(即L上弱内部算子的全体)、WE(L)(即L上弱外部算子的全体)上定义适当的序关系,使它们成为与(WCT(L),)(即L上弱余拓扑的全体)同构的完备格;当L满足一定附加条件时,可以在WR(L)(即L上弱远域算子的全体)、WB(L)(即L上弱边界算子的全体)和WD(L)(即L上弱N-导算子的全体)上定义适当的序关系,使它们成为与(WCT(L),)同构的完备格.因此一个给定的完备De Morgan代数L上的弱余拓扑可以由L上的弱内部算子、弱外部算子、弱远域算子、弱边界算子或弱N-导算子.

关 键 词:完备De  Morgan代数  弱余拓扑  弱内部算子  弱外部算子  弱远域算子  弱边界算子  弱N-导算子确定

Determination of weak cotopologies on a complete De Morgan algebra
ZHANG Xiong-wei,ZHAO Hu,LI Sheng-gang. Determination of weak cotopologies on a complete De Morgan algebra[J]. Basic Sciences Journal of Textile Universities, 2010, 23(2): 144-150
Authors:ZHANG Xiong-wei  ZHAO Hu  LI Sheng-gang
Affiliation:1.College of Mathematics and Information Science,Shaanxi Normal University,Xi′an 710062,China; 2.Deparment of Mathematics and Applied Mathematics,Yulin College,Yulin,Shaanxi 719000,China)
Abstract:Given complete De Morgan algebra L is proved,appropriate order relations can be defined on WI(L)(the set of all weak interior operators on L),WE(L)(the set of weak exterior operators on L) such that WI(L) and WE(L) are both complete lattices which are isomorphic with(WCT(L),lohtain in)(the set of weak cotopologies on L);It is also proved that,for a given complete De Morgan algebra L which satisfies some additional conditions,appropriate order relations can be defined on WR(L)(the set of weak R-neighborhood operators on L),WB(L)(the set of weak boundary operators on L),and WD(L)(the set of weak N-derived operators on L),respectively,to make WR(L),WB(L) and WD(L) be complete lattices that are isomorphic to(WCT(L),lohtain in).Thus a weak cotopology on a given complete De Morgan algebra L can be determined by a weak interior operator,a weak exterior operator,a weak R-neighborhood operator,a weak boundary opertor,or a weak N-derived operator.
Keywords:complete De Morgan algebra  weak cotopology  weak interior operator  weak exterior operator  weak R-neighborhood operator  weak boundary operator  weak N-derived operator
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