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arXiv 1209.4879math.CO
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染色d-可嵌入k-一致超图

Coloring d-Embeddable k-Uniform Hypergraphs

Carl Georg Heise, Konstantinos Panagiotou, Oleg Pikhurko, Anusch Taraz

摘要:

本文以下列方式扩展了四色定理的场景。设H(d,k)是所有可以(线性)嵌入到R^d中的k-一致超图的集合。研究了H(d,k)中超图的最大(弱和强)色数的上界.例如,我们可以证明,当d>2时,H(2d-3,d)中存在n阶超图的弱色数为Omega(log n/log log n),而当d>2时,H(d,d)中n阶超图的弱色数有界于O(n^((d-2)/(d-1).

英文摘要:

This paper extends the scenario of the Four Color Theorem in the following way. Let H(d,k) be the set of all k-uniform hypergraphs that can be (linearly) embedded into R^d. We investigate lower and upper bounds on the maximum (weak and strong) chromatic number of hypergraphs in H(d,k). For example, we can prove that for d>2 there are hypergraphs in H(2d-3,d) on n vertices whose weak chromatic number is Omega(log n/log log n), whereas the weak chromatic number for n-vertex hypergraphs in H(d,d) is bounded by O(n^((d-2)/(d-1))) for d>2.

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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