1. Department of Computer and Information Science, Raiganj University, Raiganj-733134, India
2. Department of Mathematics, Raiganj University, Raiganj-733134, India
3. Department of Mathematics, Tamralipta Mahavidyalaya, Tamluk-721636, India
4. School of Mathematics and Statistics, Southwest University, Beibei, 400715 Chongqing, China