1. King Abdulaziz University, Faculty of Science, Department of Mathematics, Operator Theory and Applications Research Group, Jeddah, Saudi Arabia
2. King Abdulaziz University, Faculty of Science, Department of Mathematics, Operator Theory and Applications Research Group, Jeddah, Saudi Arabia + Aligarh Muslim University, Department of Mathematics, Aligarh, India
3. Model Institute of Engineering & Technology, Department of Mathematics, Kot Bhalwal, J&K, India