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arXiv 1909.02691math.COcs.DM
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通过交替法研究拉姆齐博弈的界

Bounds on Ramsey Games via Alterations

He Guo, Lutz Warnke

AI总结:

本研究改进了构造无H图的经典交替法,证明移除二项随机图G_{n,p}中所有H拷贝的边不显著改变独立数,并通过在线图拉姆齐博弈的两个应用验证了该方法的实用性与分析简便性。

摘要:

我们对构造无H图的经典交替法进行了改进:对于合适的边概率p,我们证明,移除二项随机图G_{n,p}中所有H拷贝的边不会显著改变独立数。这与Erdős和Krivelevich早期的交替方法不同,他们通过从每个H拷贝中移除一条边(而非全部边)得到了类似的保证。我们通过在线图拉姆齐博弈的两个应用展示了改进后交替法的实用性,该方法使分析更简便。

英文摘要:

We present a refinement of the classical alteration method for constructing $H$-free graphs: for suitable edge-probabilities $p$, we show that removing all edges in $H$-copies of the binomial random graph $G_{n,p}$ does not significantly change the independence number. This differs from earlier alteration approaches of Erdős and Krivelevich, who obtained similar guarantees by removing one edge from each $H$-copy (instead of all of them). We demonstrate the usefulness of our refined alternation method via two applications to online graph Ramsey games, where it enables easier analysis.

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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