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arXiv 0709.1229math.DS
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风筝上的台球

Outer Billiards on Kites

Richard Evan Schwartz

摘要:

外台球是一个简单的动力系统的基础上凸平面形状。莫泽-诺依曼问题,首先由B.H.诺依曼在1960年左右,问是否存在一个平面形状,其中外部台球有一个无界轨道。这本专著的前半部分证明了外台球有一个相对于任何无理风筝定义的无界轨道。下半年的专着给出了一个非常尖锐的描述一套无界轨道,无论是在动力学和豪斯多夫维数。两半的分析揭示了风筝上的外部台球和模群之间的密切联系,以及与自相似镶嵌、多面体交换映射、丢番图逼近和里程计的联系。

英文摘要:

Outer billiards is a simple dynamical system based on a convex planar shape. The Moser-Neumann question, first posed by B.H. Neumann around 1960, asks if there exists a planar shape for which outer billiards has an unbounded orbit. The first half of this monograph proves that outer billiards has an unbounded orbit defined relative to any irrational kite. The second half of the monograph gives a very sharp description of the set of unbounded orbits, both in terms of the dynamics and the Hausdorff dimension. The analysis in both halves reveals a close connection between outer billiards on kites and the modular group, as well as connections to self-similar tilings, polytope exchange maps, Diophantine approximation, and odometers.

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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