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arXiv 1301.2841math.COmath.PR
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Meyniel猜想对随机图成立

Meyniel's conjecture holds for random graphs

Pawel Pralat, Nick Wormald

摘要:

在警察和强盗的游戏中,警察试图抓住一个在图的顶点上移动的强盗。在一个给定的图$G$上获胜所需的最小cop数称为$G$的cop数。Meyniel的猜想是这一领域中最大的公开猜想之一,它断言对于某个绝对常数$C$,每个连通图$G$的cop数至多为$C \sqrt{|V(G)|}$。本文证明了Meyniel猜想对二项随机图渐近几乎必然成立。我们这样做,首先表明,猜想持有的一般类图与一些特定的扩展型属性。这也将被用于一个单独的文件随机$d$ -正则图,在那里我们表明,猜想几乎肯定渐近时,$d = d(n) \ge 3$。

英文摘要:

In the game of cops and robber, the cops try to capture a robber moving on the vertices of the graph. The minimum number of cops required to win on a given graph $G$ is called the cop number of $G$. The biggest open conjecture in this area is the one of Meyniel, which asserts that for some absolute constant $C$, the cop number of every connected graph $G$ is at most $C \sqrt{|V(G)|}$. In this paper, we show that Meyniel's conjecture holds asymptotically almost surely for the binomial random graph. We do this by first showing that the conjecture holds for a general class of graphs with some specific expansion-type properties. This will also be used in a separate paper on random $d$-regular graphs, where we show that the conjecture holds asymptotically almost surely when $d = d(n) \ge 3$.

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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