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Jean Bertoin

Jean Bertoin received his doctorate from Université Paris VI in 1987 under the supervision of Marc Yor. In 1988 he joined the CNRS before returning to Université Paris VI as Professor in 1995. Since 2011, he has been a professor at the University of Zurich. He has a particular affinity and attachment with Mexico and the mathematical community there. This was cemented early-on when he went to work there as part of his French civil service. Today, he is a corresponding member of the Mexican Academy of Science and continues to have privileged links with the Mexican probability community.

Jean Bertoin’s work in the 90’s mainly focused on the theory of Lévy processes, to which he made many fundamental contributions. The book he wrote on this topic in 1996 is to this day an indispensable reference. He then pioneered the theory of fragmentation and coalescence processes which has blossomed into a rich and active field of research following this original impetus. His second book, Random fragmentation and coagulation processes has similarly become the classical reference on this topic as well. Among the many other areas to which Jean has made important contributions we can list his works on Burgers’ equations with random initial conditions, percolation models on random trees, as well as his works on coalescence and random metric spaces. His work is grounded in probability theory but often finds itself at the interface with other fields such as partial differential equations, combinatorics, mathematical physics as well as population genetics and evolutionary biology.

One of Jean’s great talents is transmitting his passion for mathematics: Nurturing and helping young researchers grow under his supervision has always been at the heart of his practice. The 26 doctoral students he has supervised so far, almost all of whom have an academic career, bear witness to this.