Supported by NSFC(No.11001046,No.11201305);Innovation Project of Shanghai Education Committee(No.12YZ081);Fundamental Research Foundation for the Central Universities(No.11D10904)
supported by Leading Academic Discipline Project of SHNU(No.DZL803);Innovation Project of Shanghai Education Committee(No.12YZ081);General Scientific Research Project of SHNU(No. SK201121);Mathematical Tianyuan Foundation of China(No.10926078);National Natural Science Foundation of China(No.11001046);Fundamental Research Foundation for the Central Universities(No.11D10904)