M. Khalifa Saad is an Associate Professor of Computational Differential Geometry at Mathematics Department, Faculty of Science, Sohag University, Egypt, and now he works at Mathematics Department, Faculty of Science, Islamic University of Madinah, KSA. He received his Ph.D. from Sohag University cooperating with TU Dresden, Germany in 2009. His research interests focus on Differential Geometric Properties of Curves and Surfaces in different spaces, Line Geometry and Computational Geometry of Curves and Surfaces in Computer Aided Geometric Design. Follow on Scopus and ORCID