Omar Bazighifan received his B.S. from Hadhramout University, M.S. and Ph.D degrees in Mathematics from Mansoura University, Mansoura, Egypt. Currently, he is a PhD scholar at Hadhramout University, Hadhramout, Yemen. He is also serving as a lecturer of Mathematics. His research interests include qualitative theory of differential equations and oscillation criteria for differential equations. He published several research articles in reputed international journals of mathematics. His most recent publication is 'Oscillation Criteria for Nonlinear Delay Differential Equation '.