Quantitative Matrix-Driven Diophantine approximation on $M_0$-sets
Abstract
Let be a set supporting a probability measure with Fourier decay for some constant Consider a sequence of expanding integral matrices such that the minimal singular values of are uniformly bounded below by . We prove a quantitative Schmidt-type counting theorem under the following constraints: (1) the points of interest are restricted to ; (2) the denominators of the ``shifted'' rational approximations are drawn exclusively from . Our result extends the work of Pollington, Velani, Zafeiropoulos, and Zorin (2022) to the matrix setting, advancing the study of Diophantine approximation on fractals. Moreover, it strengthens the equidistribution property of the sequence for -almost every Applications include the normality of vectors and shrinking target problems on fractal sets.
Cite
@article{arxiv.2504.21555,
title = {Quantitative Matrix-Driven Diophantine approximation on $M_0$-sets},
author = {Bo Tan and Qing-Long Zhou},
journal= {arXiv preprint arXiv:2504.21555},
year = {2025}
}