Professor, Department of Mathematics and Computer Science, Faculty of Mathematics and Computer Science, Nicolaus Copernicus University, mathematician (specialty – graph theory, discrete mathematics, algorithmics, optimization, teaching computer science), an academic fields related to computer science.

In the years 1984-1996 the director of the Institute of Computer Science, held internships and scholarships, among others, at the Universities of Tokyo (Japanese government scholarship), Bonn and Berlin (Humboldt Foundation scholarship), Pullman, Eugene (Fulbright Foundation Senior Research Grant), Groningen and Copenhagen.

He is the author of over 150 publications related to mathematics, computer science and computer science teaching, editor of the magazine “Computer in Education”, a member of the editorial boards of several other magazines.