Franz Thomas Bruss is Emeritus Professor of Mathematics at the Université Libre de Bruxelles, where he had been director of "Mathématiques Générales" and co-director of the probability chair, and where he continues his research as invited professor.His main research activities in mathematics are in the field of probability: * 1/e-law of best choice * Odds algorithm of optimal stopping * Galton–Watson processes * Resource Dependent Branching Processes * Borel–Cantelli lemma * Robbins' problem (of optimal stopping) * Pascal processes * BRS-inequality