1. Department of Financial Mathematics, School of Mathematical Sciences, Jiangsu University 1 , Zhenjiang, Jiangsu 212013, People’s Republic of China
2. Department of Mathematics, College of Science, Taif University 2 , P.O. Box 11099, Taif 21944, Saudi Arabia
3. School of Medical Informatics and Engineering, Xuzhou Medical University 3 , 209 Tongshan Road, 221004 Xuzhou, Jiangsu Province, People’s Republic of China
4. Department of Basic Science, Obour High Institute for Engineering and Technology 4 , 11828 Cairo, Egypt