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arXiv 1102.5391math.CO
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离散几何经典定理的Guth-Katz多项式剖分法简单证明

Simple Proofs of Classical Theorems in Discrete Geometry via the Guth--Katz Polynomial Partitioning Technique

Haim Kaplan, Jiří Matoušek, Micha Sharir

摘要:

最近,Guth和Katz \cite{GK2}发明了一种新的方法,用于划分有限点集在$\R^d$,基于Stone-Tukey多项式火腿三明治定理,作为他们几乎完全解决Erdenses的不同距离问题的一步。我们应用这种方法来获得新的和简单的证明两个著名的结果:Szemerédi-特罗特定理的点和线的发病率,和存在的生成树与低交叉数。由于我们认为这些证据特别适合教学,我们的目标是自足的,暂时的治疗。我们还提到了一些推广和扩展,如Pach-Sharir界的次数与有界度的代数曲线的关联。

英文摘要:

Recently Guth and Katz \cite{GK2} invented, as a step in their nearly complete solution of Erdős's distinct distances problem, a new method for partitioning finite point sets in $\R^d$, based on the Stone--Tukey polynomial ham-sandwich theorem. We apply this method to obtain new and simple proofs of two well known results: the Szemerédi--Trotter theorem on incidences of points and lines, and the existence of spanning trees with low crossing numbers. Since we consider these proofs particularly suitable for teaching, we aim at self-contained, expository treatment. We also mention some generalizations and extensions, such as the Pach--Sharir bound on the number of incidences with algebraic curves of bounded degree.

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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