1. Laboratory of Algebra, Number Theory and Nonlinear Analysis, LRES, Department of Mathematics, Faculty of Sciences, University of Monastir, Monastir, Tunisia + Department of Computer Science, Higher Institute of Computer Science Elkef, University of Jendouba, Rue Saleh Ayech, Kef, Tunisia
2. Department of Mathematics, Higher Institute of Applied Mathematics and Computer Sciences, University of Kairouan, Kairouan, Tunisia + Department of Mathematics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia