Acyclic edge coloring of planar graphs with girth at least 5

被引：7
|
作者：
Hou, Jianfeng [1 ]
Wang, Weitao [1 ]
Zhang, Xiaoran [1 ]
机构：
[1] Fuzhou Univ, Ctr Discrete Math, Fuzhou 350003, Fujian, Peoples R China
来源：
DISCRETE APPLIED MATHEMATICS | 2013年 / 161卷 / 18期
基金：
中国国家自然科学基金;
关键词：
Planar graph; Girth; Acyclic edge coloring; Critical; SPARSE HESSIAN MATRICES; CHROMATIC INDEXES;
D O I：
10.1016/j.dam.2013.06.013
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A proper edge coloring of a graph G is acyclic if there is no bichromatic cycle in G. The acyclic chromatic index of G, denoted chi(a)'(G), is the least number of colors k such that G has an acyclic k-edge-coloring. In this paper, it is shown that if G is a planar graph with girth at least 5 and maximum degree Delta, then chi(a)'(G) <= Delta + 1. Moreover, Delta >= 9, then chi(a)'(G) = Delta. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：2958 / 2967
页数：10
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