数学物理学报

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强自同态半群构成并群的图族

李为民   

  1. 上海交通大学数学系 上海200240
  • 收稿日期:2004-09-02 修回日期:2006-02-13 出版日期:2006-08-25 发布日期:2006-08-25
  • 通讯作者: 李为民
  • 基金资助:

Graphs with Strong Endomorphism Monoid being the Union of Groups

Li Weimin

  

  1. Department of Mathematics, Shanghai Jiaotong University, Shanghai 200240
  • Received:2004-09-02 Revised:2006-02-13 Online:2006-08-25 Published:2006-08-25
  • Contact: Li Weimin

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.

关键词: 图, 自同态, 半群,

Abstract: In this paper, the author gives a characterization for a graph G such that s End(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 s End(G).

Key words: Graph, Endomorphism, Semigroup, Group

中图分类号: 

  • 05C25