Random walks, spectral gaps, and Khintchine’s theorem on fractals
Random walks, spectral gaps, and Khintchine’s theorem on fractals
复制标题
随机游走、谱间隙和分形辛钦定理
DOI:
10.1007/s00222-022-01171-4
复制
发表时间:
2023
影响因子:
3.1
通讯作者:
Luethi, Manuel
中科院分区:
文献类型:
--
作者:
Khalil, Osama;Luethi, Manuel
This work addresses problems on simultaneous Diophantine approximation on fractals, motivated by a long standing problem of Mahler regarding Cantor’s middle 1/3 set. We obtain the first instances where a complete analogue of Khintchine’s Theorem holds for fractal measures. Our results apply to fractals which are self-similar by a system of rational similarities of(for any) and have sufficiently small Hausdorff co-dimension. A concrete example of such measures in the context of Mahler’s problem is the Hausdorff measure on the “middleCantor set”; i.e. the set of numbers whose baseexpansions miss a single digit. The key new ingredient is an effective equidistribution theorem for certain fractal measures on the homogeneous spaceof unimodular lattices; a result of independent interest. The latter is established via a new technique involving the construction ofS-arithmetic operators possessing a spectral gap and encoding the arithmetic structure of the maps generating the fractal. As a consequence of our methods, we show that spherical averages of certain random walks naturally associated to the fractal measures effectively equidistribute on.
登录
查看更多内容
影响因子:
0.9
作者:
EINSIEDLER, MANFRED;LUETHI, MANUEL;SHAH, NIMISH A.
通讯作者:
SHAH, NIMISH A.
影响因子:
4.9
作者:
Lindenstrauss, Elon
通讯作者:
Lindenstrauss, Elon
影响因子:
3.1
作者:
David Simmons;B. Weiss
通讯作者:
B. Weiss
影响因子:
0.8
作者:
Y. Benoist;Jean
通讯作者:
Jean
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
R. Vaughan;S. Velani
通讯作者:
S. Velani