1. Department of Mathematics, College of Science, Taibah University, Medina Saudi Arabia + Department of Mathematics, Faculty of Science, Tanta University, Tanta, Egypt
2. Department of Mathematics, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunisia
3. Department of Mathematics, College of Science, Taibah University, Medina Saudi Arabia + Department of Mathematics, Faculty of Sciences, University of Sfax, Tunisia + Nonlinear Analysis and Geometric L