1. Department of Mathematics, Faculty of Science Taif University Taif Saudi Arabia
2. Department of Mathematics, Faculty of Science Sohag University Sohag Egypt
3. Statistics Department, Faculty of Science King Abdulaziz University Jeddah Saudi Arabia
4. Mathematics Department Faculty of Science, Al‐Azhar University Cairo Egypt
5. Department of Mathematics, Faculty of Science South Valley University Qena Egypt
6. Department of Basic Sciences University of Engineering and Technology Peshawar Pakistan