1. Department of Mathematics and Computer Science, Faculty of Science, Suez University, Suez, Egypt
2. Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt
3. Department of Mathematics, College of Science and Arts, Qassim University, Ar-Rass, Saudi Arabia
4. Department of Mathematics and Statistics, Faculty of Management Technology and Information Systems, Port Said University, Port Said, Egypt