Sponsors:

• Department of Mathematics, The Chinese University of Hong Kong, Hong Kong, China
   

• Institute of Mathematical Sciences, The Chinese University of Hong Kong, Hong Kong, China
   

• South China Normal University, Guangzhou, China
   

• Institute of Computational Mathematics, Chinese Academy of Sciences, Beijing, China
   

• The National Basic Research Program (No. 2005CB321700), National Natural Science Foundation of China
   

• Office of Academic Links (China), The Chinese University of Hong Kong, Hong Kong, China