1. Department of Mathematics, Faculty of Science, Jiangsu University, Zhenjiang, China
2. Mathematics Department, College of Science, Majmaah University, Riyadh 11952, Saudi Arabia
3. Department of Mathematics, Faculty of Science, Cairo University, Giza, Egypt
4. Department of Mathematics, Faculty of Applied Science, Umm Alqura University, Makkah 21955, Saudi Arabia
5. Department of Basic Science, Higher Technological Institute, 10th of Ramadan City, Egypt