1. Department of Mathematics, College of Sciences and Arts, Qassim University, Ar-Rass, Saudi Arabia
2. Departement de Mathématiques, Faculté des sciences, Université 20 Aôut 1955, Skikda, Algérie
3. Department of mathematics, college of Education, Bahry University, Sudan
4. College of Arts, Imam Abdulrahman Bin Faisal University, Saudi Arabia
5. Laboratoire de Mathématiques Appliquées et de Modélisation, Université 8 Mai 1945 Guelma, Guelma 24000, Algeria