Institution: | 1. Department of Mathematics, Guizhou University, Guiyang, Guizhou 550025, PR China;2. School of Mathematical Sciences, Qufu Normal University, Qufu 273165, Shandong, PR China;3. Department of Mathematics, Faculty of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia;4. School of Mathematics, Statistics and Applied Mathematics, National University of Ireland, Galway, Ireland;5. Department of Mathematics, Xiangtan University, Xiangtan, Hunan 411105, PR China;6. Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia |