1. Department of Mathematics, University of Thi-Qar, Nasiriyah 64001, Iraq
2. Scientific Research Center, Al-Ayen University, Thi-Qar 64001, Iraq
3. Education Directorate of Thi-Qar, Ministry of Education, Nasiriyah 64001, Iraq
4. College of Technical Engineering, National University of Science and Technology, Thi-Qar 64001, Iraq