Professor of numerical analysis at the Department of Mathematics, Faculty of Science, Cairo University. He earned his M.Sc. in Mathematis, Faculty of Science, Cairo University . He was a channel system Ph.D. student between Cairo University, Egypt, and TU-Munich, Germany. He received his Ph.D. in "Optimal Control of Variational Inequalities, the Dam Problem". He was  the Head of the Department of Mathematics, Faculty of Science, Cairo University ( May 2012-May 2018). Prof. Sweilam  published more than 150   publications and supervised more than 33  thesis' for Ph.D., M.Sc. He is  referee and editor of several international journals, in the frame of pure and applied Mathematics.      Professor Sweilam awarded Cairo University prize for the distinct researches in Mathematics (2004). Moreover, he awarded Cairo University Award for Excellence "Basic Science – in Mathematics", (2012).  Recentltly, he awarded 325 YEARS OF FRACTIONAL CALCULUS AWARD. The First Online Conference on Modern Fractional Calculus and Its Applications Biruni University, Istanbul, Turkey, December 4-6, 2020. In 202, he  Awarded Obada prize for the distinguished researcher in Mathematics.  His main research interests are numerical analysis, optimal control of differential equations, fractional and variable order calculus, bio-informatics and cluster computing, ill-posed problems.  Important Profile Links:-  https://www.scopus.com/authid/detail.uri?authorId=6507922829  https://orcid.org/0000-0001-7428-5799  https://loop.frontiersin.org/people/641006/overview  http://portal.sci.cu.edu.eg/compm/peoplen.php   http://math.sci.cu.edu.eg  http://scholar.google.com.my/citations?user=2MsYmk0AAAAJ&hl=en