[1] Department of Mathematics, S.J.M. Institute of Technology, Chitradurga, 577501, Karnataka
[2] Department of Mathematics, K.L.E Society’s J.T. College, Gadag, 582102, Karnataka
[3] Department of Mathematics, COMSATS Institute of Information Technology, Sahiwal
[4] Department of Studies and Research in Mathematics, Kuvempu University, Shankaraghatta, Shimoga, 577 451, Karnataka