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arXiv 1702.06227math.CO
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$K_n$的一个少色$(5,5)$ -着色

A $(5,5)$-coloring of $K_n$ with few colors

Alex Cameron, Emily Heath

摘要:

对于固定整数$p$和$q$,令$f(n,p,q)$表示对完全图$K_n$的所有边着色所需的最小颜色数,使得没有$p$顶点的团跨越少于$q$的不同颜色。任何具有此性质的边着色都称为$(p,q)$着色。我们构造了一个显式的$(5,5)$ -着色,证明了$f(n,5,5) \leq n^{1/3 + o(1)}$是$n \rightarrow \infty$ .这改进了Erdens和Gyárfás给出的$O\left(n^{1/2}\right)$的最佳概率上限,并且接近于匹配最佳已知下限$Ω\left(n^{1/3}\right)$。

英文摘要:

For fixed integers $p$ and $q$, let $f(n,p,q)$ denote the minimum number of colors needed to color all of the edges of the complete graph $K_n$ such that no clique of $p$ vertices spans fewer than $q$ distinct colors. Any edge-coloring with this property is known as a $(p,q)$-coloring. We construct an explicit $(5,5)$-coloring that shows that $f(n,5,5) \leq n^{1/3 + o(1)}$ as $n \rightarrow \infty$. This improves upon the best known probabilistic upper bound of $O\left(n^{1/2}\right)$ given by Erdős and Gyárfás, and comes close to matching the best known lower bound $Ω\left(n^{1/3}\right)$.

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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