拟阵M+M^e中集的结构与关系  

The Structure and Relation of Set in Matriod M+M^e

作　　者：吕国亮[1] 赵小鹏[1] 

机构地区：[1]渭南师范学院数学与信息科学系,渭南714000

出　　处：《科学技术与工程》2010年第26期6373-6376,共4页Science Technology and Engineering

基　　金：渭南师范学院科研基金项目(10YKF009)资助

摘　　要：研究拟阵M+Me中集的结构与关系。应用单扩张与模割的一一对应,讨论了X∈L(M+Me)的各种情况。讨论了在单平行扩张下拟阵M+Me,模割M,主模割MF的等价关系。给出了拟阵主扩张M+Fe中基与极小圈的表示。The structure and relation of set in matriod M＋Me is studied. By the relation of single-element extension and modular cut,every case of X∈L（M＋Me） is discussed,and then the equivalence relationship of modular cut M,principal modular cut MFand matriod M＋Me is discussed. Finally the representation of base and circuit under single element parallel extension is given.

关 键 词：单扩张 模割 单平行扩张 主扩张 主模割 

分 类 号：O157.5[理学—数学]