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arXiv 1206.6597math.DSmath.GTmath.NT
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格空间上单圈流的Poincaré截面

A Poincaré section for horocycle flow on the space of lattices

Jayadev S. Athreya, Yitwah Cheung

摘要:

我们在模曲面$SL(2, \R)/SL(2, \Z)$上构造了时环流的Poincaré截面,并研究了相应的第一个返回映射,它与Boca-Cobeli-Zaharescu定义的变换({ \it BCZ映射})相一致.我们对这类映射的遍历不变测度进行了分类,并证明了周期轨道的等分布性。作为推论,我们得到的结果的平均深度的尖点漂移和法里序列和斜率的格矢量的间隙的分布。

英文摘要:

We construct a Poincaré section for the horocycle flow on the modular surface $SL(2, \R)/SL(2, \Z)$, and study the associated first return map, which coincides with a transformation (the {\it BCZ map}) defined by Boca-Cobeli-Zaharescu. We classify ergodic invariant measures for this map and prove equidistribution of periodic orbits. As corollaries, we obtain results on the average depth of cusp excursions and on the distribution of gaps for Farey sequences and slopes of lattice vectors.

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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