| Affiliation: | 1. School of Finance, Southwestern University of Finance and Economics, Chengdu, Sichuan, 611130, China;2. Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia;3. Department of Mathematics, Quaid-I-Azam University, 45320, Islamabad 44000, Pakistan;4. School of Mathematics, Shanghai University of Finance and Economics, Shanghai 200433, China;1. Institute of Mathematics, Academy of Sciences of the Czech Republic, Žitná 25, 115 67 Prague 1, Czech Republic;2. Department of Mathematics, Yonsei University, 50 Yonseiro, Seodaemungu, Seoul, Republic of Korea;1. Department of Applied Mathematics, Nanjing Forestry University, Nanjing 210037, PR China;2. Department of Mathematics, Nanjing University, Nanjing 210093, PR China;3. Department of Mathematics, Inha University, Incheon 402-751, Republic of Korea;1. School of Mathematical Sciences, Huaqiao University, Fujian Quanzhou, 362021, PR China;2. Department of Mathematics, Jiaxing University, Zhejiang Jiaxing, 314001, PR China |
