1. Department of Mathematics, Lishui University, Lishui, 323000, People’s Republic of China
2. Shanghai Key Laboratory of Trustworthy Computing, East China Normal University, Shanghai, 200062, People’s Republic of China
3. School of Mathematical and Statistical Sciences, The University of Texas Rio Grande Valley, Edinburg, TX 78539, U.S.A.
4. Department of Applied Mathematics, School of Fundamental Science and Engineering, Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
5. Department of Mathematics, Kobe University, Kobe 657-8501, Japan