强自同态半群构成并群的图族  

Graphs with Strong Endomorphism Monoid being the Union of Groups

作　　者：李为民[1] 

机构地区：[1]上海交通大学数学系,上海200240

出　　处：《数学物理学报（A辑）》2006年第4期570-577,共8页Acta Mathematica Scientia

摘　　要：该文给出强自同态半群构成并群的图族的特征,同时文中也明确刻划了其中每个群的单位元．In this paper, the author gives a characterization for a graph G such that sEnd（G）, the monoid of the strong endomorphisms of G, is the union of groups. In particular, if this is the case, the author explicitly finds the identity element of each group in sEnd（G）.

关 键 词：图 自同态 半群 群 

分 类 号：O157.5[理学—数学]