I_(E*)(X)中E类方向保序变换半群的秩  

The rank of semigroup of all Orientation-Preserving Transformations in E Classes for I_E*(X)

作　　者：龙伟锋[1] 游泰杰[1] 

机构地区：[1]贵州师范大学数学与计算机科学学院,贵州贵阳550001

出　　处：《数学的实践与认识》2014年第10期230-234,共5页Mathematics in Practice and Theory

基　　金：贵州省科学技术基金(黔科合J字LKS[2013]01号)

摘　　要：设X为有限集合,E为X上的等价关系.令OPPI_E*(X)为所有I_R*(X)中E类方向保序变换构成的半群.在一定的条件下讨论了OPPI_E*(X)的Green关系与秩.Let E be an equivalence on a finite set X.The semigroup denote by OPPIE^＊（X）consisting of all orientation-preserving transformations in E classes for IE^＊（X）.This paper characterizes its rank and Green＇s relations under certain assumptions.

关 键 词：保E^＊关系 方向保序 Green关系 秩 

分 类 号：O152.7[理学—数学]