| Affiliation: | 1. School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, PR China;2. School of Science, Lanzhou University of Technology, Lanzhou, PR China;1. Graduate School of System Informatics, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe-shi, Hyogo 657-8501, Japan;2. Department of Mathematics, Waseda University, 3-4-1 Ohkubo, Shinjuku-ku, Tokyo 169-8555, Japan;1. Complex Systems Research Center, Shanxi University, Taiyuan, Shanxi 030006, PR China;2. Department of Mathematics, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5, Canada |
