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最大度不大于5的Halin-图的点强全染色

刘林忠 张忠辅

经济数学2002,Vol.19Issue(1):77-80,4.
经济数学2002,Vol.19Issue(1):77-80,4.

最大度不大于5的Halin-图的点强全染色

ON THE VERTEX STRONG TOTAL COLORING OF HALIN GRAPHS WITH △ (G) ≤ 5

刘林忠 1张忠辅2

作者信息

  • 1. 兰州铁道学院管理工程系,兰州,730070
  • 2. 兰州铁道学院应用数学研究所,兰州,730070
  • 折叠

摘要

Abstract

A proper k-total coloring f of graph G(V,E) be called a k-vertex strong total coloring of G(V,E)iff for (A)v∈V(G), the elements in N[v] are colored with different colors, where N[v] = {u|uv ∈ V (G)}U{v};and xusT(G)=min{k | there is a k-vertex strong total coloring of G} is called the vertex strong total chromatic number of G. In this paper,we obtain the xusT(G) of Halin graph G(V,E) with △(G≤5) and present a conjecture as follows:If G(V,E) is a graph with the order of each component are at least 6,then xusT(G)≤ △(G)+2,where △(G) is the maximum degree of G.

关键词

Halin-图/染色/点强全染色

Key words

Halin-graph/coloring/vertex strong total coloring

引用本文复制引用

刘林忠,张忠辅..最大度不大于5的Halin-图的点强全染色[J].经济数学,2002,19(1):77-80,4.

基金项目

This Research is supported by NSFC of China (No. 19871036) (No. 19871036)

经济数学

OACSCD

1007-1660

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