1. Department of Mathematics, Faculty of Science, Sohag University, Sohag 82524, Egypt
2. Department of Mathematics, Faculty of Science, Taif University, Taif 888, Saudi Arabia
3. Department of Mathematics, Umm Al-Qura University, P.O. Box 14949, Makkah, Saudi Arabia
4. Department of Mathematics, College of Turabah, Taif University, Turabah 21478, Saudi Arabia