题 目 二:Almost periodic function and rotation number of the Schr?dinger operator
摘 要 二: The concept of almost periodic functions is due to H. Bohr. The concept of rotation number is due to H. Poincaré. The Schr?dinger operator is named after E. Schr?dinger. I will present our work related with these respects. (joint work with David Damanik and Meirong Zhang)