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arXiv 1206.0163nlin.SImath.DS
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伪可积台球与算术动力学

Pseudo-integrable billiards and arithmetic dynamics

Vladimir Dragović, Milena Radnović

摘要:

我们引入了一类新的平面台球系统,其边界由许多共焦二次曲线的弧形成,使得它们包含一些反射角。基本动力学,拓扑,几何和算术性质的台球进行了研究。由边界反射角所引起的新现象,导致了与Liouville-Arnold定理不同的高等属的不变叶和动力学行为。它的类似物来自于测量叶理的迈尔定理。给出了Poncelet定理的局部形式,并给出了周期性的代数几何条件。与区间交换变换的联系与Keane型极小性条件一起建立。证明了该动力学只依赖于旋转数的算术运算,而不依赖于给定的共焦二次曲线束的几何形状。

英文摘要:

We introduce a new class of billiard systems in the plane, with boundaries formed by finitely many arcs of confocal conics such that they contain some reflex angles. Fundamental dynamical, topological, geometric, and arithmetic properties of such billiards are studied. The novelty, caused by reflex angles on boundary, induces invariant leaves of higher genera and dynamical behaviour different from Liouville-Arnold's theorem. Its analogue is derived from the Maier theorem on measured foliations. A local version of Poncelet theorem is formulated and necessary algebro-geometric conditions for periodicity are presented. The connection with interval exchange transformation is established together with Keane's type conditions for minimality. It is proved that the dynamics depends on arithmetic of rotation numbers, but not on geometry of a given confocal pencil of conics.

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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