Affiliation: | 1.Department of Engineering Mathematics and Physics, Higher Institute of Engineering, El-Shorouk, Cairo, Egypt ;2.Operator Theory and Applications Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia ;3.Institute of Mathematical Sciences, Faculty of Science, University of Malaya, 50601, Kuala Lumpur, Malaysia ;4.Department of Mathematics and Statistics, Tshwane University of Technology, Pretoria, 0008, South Africa ;5.Department of Engineering Sciences, Faculty of Technology and Engineering, East of Guilan, University of Guilan, Rudsar-Vajargah, 44891-63157, Iran ;6.Science Program, Texas A&M University at Qatar, PO Box 23874, Doha, Qatar ; |