Coloring the square of a planar graph

Coloring the square of a planar graph
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DOI:
10.1002/jgt.10077
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发表时间:
2003-02
影响因子:
0.9
通讯作者:
J. V. D. Heuvel;Sean McGuinness
J. V. D. Heuvel;Sean McGuinness
中科院分区:
数学3区
文献类型:
--
作者:
J. V. D. Heuvel;Sean McGuinness

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我们证明,对于任何最大度为Δ的平面图G,G的平方的色数满足χ(G²) ≤ 2Δ + 25。我们将这一结果推广到平面图的整数标记问题上,该问题涉及图中距离为1和2的约束条件。© 2002威利期刊公司。《图论杂志》42卷:110 - 124页,2003年
We prove that for any planar graph G with maximum degree Δ, it holds that the chromatic number of the square of G satisfies χ(G2) ≤ 2Δ + 25. We generalize this result to integer labelings of planar graphs involving constraints on distances one and two in the graph. © 2002 Wiley Periodicals, Inc. J Graph Theory 42: 110–124, 2003