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arXiv 0909.0575math.PR
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Poisson匹配的几何性质

Geometric Properties of Poisson Matchings

Alexander E. Holroyd

摘要:

假设红点和蓝点在R^d中作为独立的等强度泊松过程出现,并且红点和蓝点通过直边以平移不变的方式匹配。我们解决几个密切相关的性质,这样的匹配。证明了在d=1和d ≥ 3中存在局部极小化总边长的匹配,但在带R x [0,1]中不存在.本文证明了存在匹配,其中每个有界集在d>=2中只与n条边相交,而在d=1或在带中不相交。这是未知的,是否存在一个匹配没有交叉点在d=2,但我们证明了积极的答案,这个问题的各种放宽。几个开放的问题。

英文摘要:

Suppose that red and blue points occur as independent Poisson processes of equal intensity in R^d, and that the red points are matched to the blue points via straight edges in a translation-invariant way. We address several closely related properties of such matchings. We prove that there exist matchings that locally minimize total edge length in d=1 and d>=3, but not in the strip R x [0,1]. We prove that there exist matchings in which every bounded set intersects only finitely many edges in d>=2, but not in d=1 or in the strip. It is unknown whether there exists a matching with no crossings in d=2, but we prove positive answers to various relaxations of this question. Several open problems are presented.

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