1. Department of Mathematics and Computer Science, Faculty of Science, Beni-Suef University, Beni Suef, Egypt
2. Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City 11884, Egypt
3. Mathematics Department, College of Science, Jouf University, Sakaka (2014), Saudi Arabia
4. Department of Mathematical Science, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 105862, Riyadh 11656, Saudi Arabia
5. King Khalid University, College of Science, Department of Mathematics, P.O. Box 9004, 61413 Abha, Saudi Arabia
6. Department of Mathematics, Faculty of Science, Al-Azhar University, 71524 Assiut, Egypt