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arXiv 2011.04809math.COcond-mat.stat-mechmath.PR
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关于随机超图的2-可染性

On the 2-colorability of random hypergraphs

Dimitris Achlioptas, Cristopher Moore

摘要:

超图的2-着色是从它的顶点到一组两种颜色的映射,使得没有边是单色的。设$H_k(n,m)$是一个随机的$k$ -一致超图,它是由$m$的边均匀、独立、置换地选取$n$的顶点而形成的.很容易证明,如果是$r \geq r_c = 2^{k-1} \ln 2 - (\ln 2) /2$,则$H_k(n,m=rn)$很有可能不是2-可着色的。我们通过证明如果$r \leq r_c - 1$,则$H_k(n,m=rn)$有很高的概率是2-可着色的来补充这一观察。

英文摘要:

A 2-coloring of a hypergraph is a mapping from its vertices to a set of two colors such that no edge is monochromatic. Let $H_k(n,m)$ be a random $k$-uniform hypergraph on $n$ vertices formed by picking $m$ edges uniformly, independently and with replacement. It is easy to show that if $r \geq r_c = 2^{k-1} \ln 2 - (\ln 2) /2$, then with high probability $H_k(n,m=rn)$ is not 2-colorable. We complement this observation by proving that if $r \leq r_c - 1$ then with high probability $H_k(n,m=rn)$ is 2-colorable.

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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