Element deletion changes in dynamic coloring of graphs

被引:3
作者
Miao, Lian-Ying [1 ]
Lai, Hong-Jian [2 ]
Guo, Yan-Fang [1 ]
Miao, Zhengke [3 ]
机构
[1] China Univ Min & Technol, Inst Math, Xuzhou 221116, Peoples R China
[2] W Virginia Univ, Dept Math, Morgantown, WV 26506 USA
[3] Jiangsu Normal Univ, Sch Math & Stat, Xuzhou 221116, Jiangsu, Peoples R China
关键词
Dynamic coloring; Dynamic chromatic number; CHROMATIC NUMBER; PLANAR GRAPHS;
D O I
10.1016/j.disc.2016.01.009
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A proper vertex k-coloring of a graph G is dynamic if for every vertex v with degree at least 2, the neighbors of v receive at least two different colors. The smallest integer k such that G has a dynamic k-coloring is the dynamic chromatic number Xd(G). In this paper the differences between x(d)(G) and X-d(G-e), and between x(d)(G) and X-d(G-v) are investigated respectively. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码:1600 / 1604
页数:5
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