数学物理学报 ›› 2000, Vol. 20 ›› Issue (2): 251-255.

• 论文 • 上一篇    下一篇

关于点的度在modulo 4下等值的上可嵌入图类

  

  1. (湖南师范大学数学系 长沙 410081)
     
    (北方交通大学数学系 北京 100044)
  • 出版日期:2000-03-03 发布日期:2000-03-03

The Classes of Upper Embeddable Graphs With the Same Value of Degree of Vertex Under Modulo    

  1. (Department of Mathematics, Hunan Normal University, Changsha 410081)

     

    (Department of Mathematics, Northern Jiaotong University, Beijing 100044)

  • Online:2000-03-03 Published:2000-03-03

摘要:

结合4-边形2-因子条件, 确定了一类点的度在modulo 4下值为0,1的上可嵌入图类. 从而综合已有的结果, 较完整地刻划了这类图的上可嵌入性情况.

关键词: 图, Betti亏数, 上可嵌入, 最大亏格.

Abstract:

Combined with the condition of 4-quadrangle 2-factor, this paper gives classes of upper embeddable graphs whose value of degree of each vertex is 0 or 1, respectively, under modulo 4. Based on the known, results we characterize entirely the upper embeddability of such classes of graphs containing a 4-quadrangle 2-factor.

Key words: Graph, Bettideficiencynumber, Upperembeddable, Maximumgenus.

中图分类号: 

  • 05C75