SHRINKING TARGET PROBLEMS FOR FLOWS ON HOMOGENEOUS SPACES

SHRINKING TARGET PROBLEMS FOR FLOWS ON HOMOGENEOUS SPACES
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DOI:
10.1090/tran/7783
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发表时间:
2019-11-01
影响因子:
1.3
通讯作者:
Yu, Shucheng
Yu, Shucheng
中科院分区:
数学1区
文献类型:
--
作者:
Kelmer, Dubi;Yu, Shucheng

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我们研究齐次空间 Gamma\G 上离散时间流的收缩目标问题,其中 G 是半单群,Gamma 是不可约格。我们的结果适用于对角化流和单能流,并且适用于非常普遍的收缩目标族。作为一个特例,我们建立了单能流尖点偏移的对数定律,解决了 Athreya 和 Margulis 提出的问题。
We study shrinking targets problems for discrete time flows on a homogeneous space Gamma\G with G a semisimple group and Gamma an irreducible lattice. Our results apply to both diagonalizable and unipotent flows and apply to very general families of shrinking targets. As a special case, we establish logarithm laws for cusp excursions of unipotent flows, settling a problem raised by Athreya and Margulis.