Vasilios N. Katsikis received his Diploma of Mathematics from the University of Athens, his M. Sc. in Applied Mathematics and his Ph. D. in Mathematics from the National Technical University of Athens. He also worked as a post-doc researcher in Applied and Computational Mathematics under the financial support of the State Scholarship Foundation (IKY). During the years 1999-2013 he worked in several Greek Universities and Technological Education Institutes and from February 2014 he belongs to the teaching and research stuff of the Department of Economics, Division of Mathematics and Informatics, University of Athens, as an assistant professor of Mathematics and Informatics. His research interests lie in the areas of Computational Mathematics, Functional Analysis, Computational Finance, Matrix Analysis and Applied Linear Algebra. He has published more than 20 journal papers in high quality journals concerning the above areas and he serves as a reviewer for many journals and congresses while he belongs to the editorial board of three journals.