1. School of Software, Pingdingshan University, Pingdingshan 467000, China
2. College of Computing and Information Technologies, National University, Manila PH1008, Philippines
3. Department of Mathematics, Air University Multan Campus, Multan, Pakistan
4. Department of Basic Sciences and Humanities, University of Engineering and Technology, New Campus, Lahore, Pakistan
5. Department of Natural Sciences and Humanities, University of Engineering and Technology, Lahore(RCET), Pakistan
6. UFR of Mathematics and Computer Science, University Felix Houphouet Boigny of Cocody, Abidjan, Côte d’Ivoire