1. Department of Mathematics, Poornapajna College, Volakadu Road, Udupi 576101, Karnataka, India
2. Department of Mathematics, School of Applied Sciences, REVA University, Bengaluru 560064, Karnataka, India
3. Department of Mathematics, Dr. Ambedkar Institute of Technology, BDA Outer Ring Road, Mallathalli 560056, Karnataka, India
4. Department of Mathematics, Manipal Institute of Technology Bengaluru, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India