题目： Theory of symplectic cocycles and Schrodinger operators on strips
报告人：Disheng Xu, University of Chicago
摘要： In this talk we will show the similarities of the theory of SL(2,R) cocycles and that of Symplectic cocycles. In particular we prove that Sp(2d;R),HSp(2d) and pseudo unitary cocycles with at least one non-zero Lyapunov exponent are dense in all usual regularity classes for non periodic dynamical systems. For Schrodinger operator on the strip, we will show a similar result for density of positive Lyapunov exponents.