1. Department of Mathematics, College of Science, Northern Border University, Arar, Saudi Arabia
2. Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt
3. Department of Mathematics, Faculty of Science, Taibah University, Madinah, Saudi Arabia
4. Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt
5. Department of Mathematics, Faculty of Science, Taif University, Taif, Saudi Arabia