Affiliation: | 1. Department of Mathematics, Thiruvalluvar University, Vellore 632 115, India;2. Department of Mathematics, and Research Center for Complex Systems and Network Sciences, Southeast University, Nanjing 210 096, China;3. Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;4. Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, King Abdulaziz University, Jeddah 21589, Saudi Arabia |