2018年11月23日下午，南京师范大学课程与教学研究所所长、博士生导师喻平教授在我院报告厅作了题为“数学教育实证研究的选题与设计”的学术报告。报告由院长刘宏伟主持，我校数学教育研究团队的相关老师及相关专业的部分博士生、硕士生、访问学者50余人参加了本次报告。

# 数苑讲座之一：Fractal Hardy space

 Speaker 董新汉 DateTime 2021年9月20日（周一）下午2:30-3:30 Place 6号楼二楼报告厅 Abstract The first singular, non-atomic, spectral measure was constructed by Jorgensen and Pedersen. They proved that 1/R-Cantor measure $\mu_R$is a spectral measure with a spectrum $\Lambda$ if R is even。For any square integral function $f$, Let,    $F_{f, \Lambda}=\sum_{\lambda\in\Lambda}f^(\lambda)z^{\lambda}$.Hence,  H={F_{f, \Lambda}: f a is square integral function}is a complete subspace of Hardy space. In this talk, we mainly investigated the following problems:(1) Integral representation theorem of H; (2) Growth theorem of H；(3) Strichartz’s exceptional set and Carleson’s exceptional set under certain conditions;(4) Picard property, Cantor boundary behaviour of $F_{f,\Lambda}$, under Hadamard gap condition.