Scientific Committee: Chengming Bai (Chern Institute, Tianjin), Ugo Bruzzo (SISSA, Trieste), Duiliu E. Diaconescu (Rutgers University), Fabio Perroni (University of Trieste), Francesco Sala (University of Western Ontario). Organizing committee: Chengming Bai, Ugo Bruzzo, Francesco Sala. Supported by: Chern Institute of Mathematics; National Natural Science Foundation of China; Foundation Compositio Mathematica; SISSA, Trieste