1. Department of Mathematics, College of Science and Humanities in Al-Aflaj, Prince Sattam Bin Abdulaziz University, Al-Kharj, Al-Aflaj 11942, Saudi Arabia
2. Administration Department, Administrative Science College, Thamar University, Thamar, Yemen
3. Department of Mathematics, Faculty of Science, Assiut University, Assiut 71515, Egypt
4. Department of Mathematics and Statistics, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia