Institution: | 1.School of Mathematics and Statistics, Nanjing University of Information Science and Technology, Nanjing, 210044, China ;2.Department of Mathematics, University of Peshawar, Peshawar, Pakistan ;3.College of International Students, Wuxi University, Wuxi, Jiangsu, 214105, China ;4.Department of Statistics, Quaid-I-Azam University 4250 Islamabad, Islamabad, 44000, Pakistan ;5.Department of Sciences and Humanities, FAST - National University, Islamabad, Pakistan ; |