Neighbor sum distinguishing index of 2-degenerate graphs

被引:5
|
作者
Hu, Xiaolan [1 ]
Chen, Yaojun [2 ]
Luo, Rong [3 ]
Miao, Zhengke [3 ]
机构
[1] Cent China Normal Univ, Sch Math & Stat, Wuhan 430079, Hubei, Peoples R China
[2] Nanjing Univ, Dept Math, Nanjing 210093, Jiangsu, Peoples R China
[3] Jiangsu Normal Univ, Sch Math & Stat, Xuzhou 221116, Peoples R China
关键词
Neighbor sum distinguishing edge colorings; 2-Degenerate; Maximum degree; DISTINGUISHING EDGE COLORINGS;
D O I
10.1007/s10878-017-0110-8
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
We consider proper edge colorings of a graph G using colors in . Such a coloring is called neighbor sum distinguishing if for each pair of adjacent vertices u and v, the sum of the colors of the edges incident with u is different from the sum of the colors of the edges incident with v. The smallest value of k in such a coloring of G is denoted by . In this paper we show that if G is a 2-degenerate graph without isolated edges, then .
引用
收藏
页码:798 / 809
页数:12
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