Jean-Luc Marichal obtained his PhD degree in Mathematics from the University of Liège in 1998. After occupying the positions of research assistant and lecturer in the Faculty of Economics, Management, and Social Sciences at the University of Liège, he was recruited in 2000 by the National Scientific Research Fund as a scientific research worker (in the category of research associates) and attached to the Institute of Mathematics of the University of Liège. In 2001, he turned towards the United States, where he was offered the temporary position of Visiting Assistant Professor in the Department of Mathematics at Brigham Young University, in Utah. Two years later, he came back to Europe to obtain a permanent position at the University of Luxembourg as an associate professor in the Faculty of Law, Economics, and Finance. His teaching concentrates on mathematics, operational research, and decision aid, while his research interests include aggregation processes in information and decision making systems, functional equations, non-additive measures and integrals, conjoint measurement theory, and cooperative game theory.