报告人:周麒(南开大学)
邀请人:李骥
报告题目:Global rigidity results for quasiperiodic ultra-differentiable cocycles
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)
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。