旨在建立L-闭包系统的初步理论.运用一一对应的思想和范畴论的方法研究了L-闭包系统的确定和L-CS(即L-闭包空间与连续映射构成的范畴)的范畴性质.设L-是完备De Morgan代数,CS(X,L)是给定集合X上的L-闭包系统的全体.证明了可以在WCL(X,L)(即X上的L-弱闭包算子的全体)、WIN(X,L)(即X上的L-弱内部算子的全体、WE(X,L)(即X上的L-弱外部算子的全体)上定义适当的序关系,使它们成为与(CS(X,L),真包含)同构的完备格,并且证明了L-CS是集合范畴Set上的拓扑范畴.扩展了分明闭包系统中的一些结果.
Some fundmantal theorems of L-closure systems was proved.Determination of L-closure systems and categoria properties of L-CS(the category of L-closure spaces and continuous mappings) are studied with the help of idea of one-to-one correspondence and method of category.Let CS(X,L) be the set of all L-closure systems of a given set X (where L is a complete De Morgan algebra).It is proved that appropriate order relations can be given on WCL(X,L)(the set of all L-weak closure operators of X),WIN(X,L)(the set of all L-weak interior operators of X),WE(X,L)(the set of all L-weak exterior operators of X) respectively to make them to be complete lattices which are ismorphic with(CS(X,L),lohtain in).It is also proved that L-CS is a topological category on set(the category of sets and continuous mappings).Some results of crisp closure systems are extended.