数学物理学报

• 论文 • 上一篇    下一篇

两类广义Petersen 图的Euler亏格

1,2马登举; 1任韩; 3卢俊杰   

  1. (1. 华东师范大学数学系 上海 200062; 2. 南通大学理学院 江苏 南通 226007; 3. 华东理工大学数学系 上海 200240)
  • 收稿日期:2006-03-10 修回日期:2008-10-09 出版日期:2009-02-25 发布日期:2009-02-25
  • 通讯作者: 马登举
  • 基金资助:
    国家自然科学基金(10671073)和上海市科委重点基金(07XD14011)资助

The Euler Genera of Two Classes of Generalized Petersen Graphs

1,2Ma Dengju; 1Ren Han; 3Lu Junjie   

  1. (1.Department of Mathematics, East China Normal University, Shanghai 200062; 2. School of Science, Nantong University, Jiangsu Nantong 226007;
    3. Department of Mathematics, East China University of Science and Technology, Shanghai 200210)
  • Received:2006-03-10 Revised:2008-10-09 Online:2009-02-25 Published:2009-02-25
  • Contact: Ma Dengju

摘要: 广义 Petersen 图 P(n, m) 是这样的一个图:它的顶点集是{ui, vi | i=0,1, , n-1}, 边集是 {uiui+1, vivi+m, uivi | i=0,1, , n-1}, 这里 m, n 是正整数、加法是在模n 下且 m<|n/2| . 这篇文章证明了P(2m+1, m)(m≥ 2) 的 Euler 亏格是1, 并且 P(2m+2, m)(m≥ 5) 的 Euler 亏格是2.

关键词: 胞腔嵌入, Euler 亏格, 广义 Petersen图.

Abstract: The generalized Petersen graph P(n, m) is such a graph that its vertex set is
{ui, vi |i=0,1, …, n-1} and edge set is {uiui+1, vivi+m, uivi | i=0,1, …, n-1}, where m, n are positive integers satisfying m< |n/2| and indices is read modulo n. It is proved that the Euler genus of P(2m+1, m)(m≥2) is 1 and that the Euler genus of P(2m+2, m)(m≥5) is 2.

Key words: Cellular embedding, Euler genus, Generalized Petersen graph.

中图分类号: 

  • 05C10