1. Department of Mathematics and Statistics, the University of Lahore, Lahore 54000, LahorePakistan
2. Department of Mathematics, Division of Science and Technology, University of Education, Lahore 54000, Lahore, Pakistan
3. Department of Mathematics, The University of Lahore, Gujrat-Pakistan
4. CEMB, University of Punjab, Lahore-Pakistan
5. Department of Mathematics and Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Korea, and Center for General Education, China Medical University, Taichung 40402, TaichungTaiwan