Institution: | 1.NUTECH, School of Applied Sciences and Humanities, National University of Technology, Islamabad, 44000, Pakistan ;2.Department of Mathematics and Statistics, International Islamic University, Islamabad, 44000, Pakistan ;3.Department of Mathematics, Institute of Arts and Science Chiniot Campus Govt College University, Faisalabad, Pakistan ;4.School of Mathematics and Statistics, Beijing Institute of Technology, Beijing, 100081, China ;5.Department of Mathematics, Mohi-ud-Din Islamic University, Nerian Sharif, Azad Kashmir, 12010, Pakistan ; |