回顾下今天上午的报告：8:30-9:20,Martin Barlow,Random walks and percolation;9:30-10:20,Arun Ram, Combinatorics，representations，homogeneous spaces and elliptic cohomology ;11:00-11:50,Jun-Muk Hwang,Sphere Packings,Symplectic Lattices and Riemann Surfaces.
