拟阵的差导算子与导算子的完备格同构  

The Relations Among Matroids Difference Operator and Matroids Operator

作　　者：程茜[1] 

机构地区：[1]西安欧亚学院基础部数学教研室,陕西西安710065

出　　处：《榆林学院学报》2010年第2期12-14,共3页Journal of Yulin University

摘　　要：定义了拟阵的差导算子,导算子,证明了对每个给定的有限集X,可以给DD(X)(即X上拟阵差导算子的全体)上赋予适当的序使得(DD(X),)与(D(X),)(即X上拟阵导算子的全体)之间是完备格同构的。The concepts of difference derived operator are introduced in this paper.It is proved that,for a given finite set,appropriate order relations can be defined on DD（X）（the set of all matroids difference derived operators on）,D（X）（the set of all matroids derived operators on）,so that both（DD（X） and（DX） are complete lattices.

关 键 词：拟阵 拟阵差导算子 拟阵导算子 完备格同构 

分 类 号：O157.5[理学—数学]