This joint colloquium is organized by: Shenzhen International Center for Mathematics (SICM) and the Department of Mathematics at & Southern University of Science and Technology with Sponsorship of Sino-Russian Center for Mathematics together with Chern Insitute of Mathematics, Peking University, Shandong University, Jilin University, University of Science and Technology of China, Wuhan University, Sichuan University, Central China Normal University.