Vasilios N. Katsikis received his Diploma of Mathematics from the University of Athens, and his MSc 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 1999–2014, he worked in several Greek universities and technological education institutes, and from February 2014, he belongs to the teaching and research staff of the Department of Economics, Division of Mathematics and Informatics, at the National and Kapodistrian 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, and Image and Signal Processing. He has published several articles 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.