Professor of Mathematics, University of Michigan, USA.
Professor and the Michael Brin Endowed Chair in Mathematics at the University of Maryland, College Park, USA.
Professor of Computing Science, Simon Fraser University, Canada.
Professor of Computer Science, Tel Aviv University, Israel.
Group Leader at Algorithms and Complexity group of CWI, member of QuSoft, and full professor at the ILLC of the University of Amsterdam, The Netherlands.
Professor Emeritus of Computer Science, Tel Aviv University, Israel.
Directeur de Recherche (DR2) du CNRS, France.
Professor Emeritus of Computer Science, Technion - Israel Institute of Technology, Israel.
Provost and Head of the Chair of Software Engineering at Constructor Institute of Technology, Switzerland.
Professor Emeritus of Computer Science, Leipzig University, Germany.
Retired full professor for Software Engineering and Theory of Programing, Computer Science Institute of Humboldt-Universität zu Berlin, Germany.
Professor of Computer Science, Technical University Berlin, Germany.
Professor of Mathematics, University of Bonn, Germany.
PhD student of Mathematics, University of Bonn, Germany.
Professor of Computer Science, Tel Aviv University, Israel.
Distinguised Professor of Computer Science, The Graduate Center of the City University of New York, USA.
Professor of Algebra and Theoretical Computer Science, Ural University, Russia.