报告人:谭波 教授(华中科技大学)
时间:2026年01月06日 09:30-
地址:理科楼LA104
摘要:We compute the Fourier dimension of the multiplicative $\psi$-well approximable set
$$M_2^{\times}(\psi)=\left\{{\bf{x}}\in [0,1]^{2}\colon \|qx_1\|\|qx_2\|<\psi(q) \text{ for i.m. } q\in \mathbb{N}\right\},$$
Where $\psi\colon\mathbb{N}\to [0,\frac{1}{4})$ satisfies $\sum_q\psi(q)\log\frac{1}{\psi(q)}<\infty.$
As a corollary, we show that the set $M_2^{\times}(q\mapsto q^{-\tau})$ is non-Salem for $\tau>1.$
邀请人:孔德荣
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