Inhomogeneous Diophantine approximation in the coprime setting
Number Theory
2019-09-02 v2
Abstract
Given and , let \begin{equation*} ||\gamma-nx||^\prime=\min\{|\gamma-nx+m|:m\in Z, \gcd (n,m)=1\}, \end{equation*} %where is the largest common divisor of and . Two conjectures in the coprime inhomogeneous Diophantine approximation state that for any irrational number and almost every , \begin{equation*} \liminf_{n\to \infty}n||\gamma -n\alpha||^{\prime}=0 \end{equation*} and that there exists , such that for all and , \begin{equation*} \liminf_{n\to \infty}n||\gamma -n\alpha||^{\prime} < C. \end{equation*} We prove the first conjecture and disprove the second one.
Cite
@article{arxiv.1802.04384,
title = {Inhomogeneous Diophantine approximation in the coprime setting},
author = {Svetlana Jitomirskaya and Wencai Liu},
journal= {arXiv preprint arXiv:1802.04384},
year = {2019}
}