关于Betti亏数的一个结果的改进

Improvement of a result on the Betti deficiency number of graphs

摘要: 一个连通图G的最大亏格主要由其参数Betti亏数ξ(G)确定,本文推广了黄元秋,赵霆雷在文4中关于ξ(G)的结果,从而得到了关于ξ(G)的一个新结果.

Abstract: It is well-known that the maximum genus of connected graph G is mainly determined by the Betti deficiency number ξ(G).This paper generalizes the results in4,and obtains a new couclusion on the Betti deficiency number ξ(G).