Affiliation: | (1) Department of Mathematics, Ningbo University, 315211 Ningbo, China;(2) Department of Applied Mathematics, Dalian University of Technology, 116024 Dalian, China;(3) Department of Physics, Shanghai Jiao-Tong University, 200030 Shanghai, China;(4) Key Laboratory of Mathematics Mechanization, Chinese Academy of Sciences, 100080 Beijing, China |