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arXiv 1209.2202math.CO
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三个图着色参数的Nordhaus-Guddam型关系

Nordhaus-Guddam Type Relations of Three Graph Coloring Parameters

Kuo-Ching Huang, Ko-Wei Lih

摘要:

设G是一个单图。图G的顶点的染色称为:(i)2-真染色,如果距离为2的顶点接收不同的颜色;(ii)内射染色,如果拥有共同邻居的顶点接收不同的颜色;(iii)正方形染色,如果距离至多为2的顶点接收不同的颜色。本文研究了2-真色数、单射色数和平方色数的Nordhaus-Guddam型不等式.

英文摘要:

Let G be a simple graph. A coloring of vertices of G is called (i) a 2-proper coloring if vertices at distance 2 receive distinct colors; (ii) an injective coloring if vertices possessing a common neighbor receive distinct colors; (iii) a square coloring if vertices at distance at most 2 receive distinct colors. In this paper, we study inequalities of Nordhaus-Guddam type for the 2-proper chromatic number, the injective chromatic number, and the square chromatic number.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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