报告人：周麒（南开大学）

报告人简介：周麒，南开大学陈省身数学研究所教授。研究领域为动力系统与数学物理，主要研究方向为拟周期薛定谔算子谱理论。已在Duke Math,Adv Math, Math Ann,CMP等国际期刊上发表多篇论文,与Artur Avila、R.Krikirian等著名数学家有着密切合作。

报告题目：Global rigidity results for quasiperiodic ultra-differentiable cocycles

报告摘要：In this talk, we show that for a large class of ultra-differentiable potential, and for any irrational frequency, for almost every energy E the corresponding quasiperiodic Schrodinger cocycle is either rotations reducible or has positive Lyapunov exponents. This partially answers R. Krikorian's open question. As spectral application, we prove ``Last's intersection spectrum conjecture" in the Gevrey setting.

报告时间：2020年11月10日（星期二）上午10：30-12：00

报告地点：腾讯会议ID：370 548 336（会议密码：123456）