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Pierre-Louis Lions

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Pierre-Louis Lions, Fields medal winner 1994

Pierre-Louis Lions introduced the notion of viscosity solutions in the paper "Viscosity solutions of Hamilton-Jacobi equations", which he co-wrote with Michael Crandall, in 1983. This has had a great effect on the theory of partial differential equations.

Son of the mathematician Jacques-Louis Lions, Pierre-Louis Lions graduated from the École Normale Supérieure in 1977 and received his doctorate from UPMC in 1979. From 1979 to 1981 Lions held a research post at the CNRS (Centre National de la Recherche Scientifique) in Paris, and in 1995 he became a director of research. He has also been a professor at the University of Paris-Dauphine since 1981 and is currently the president of the scientific council for the Finance and Sustainable Development Chair. Since 1992, he has been a professor of applied mathematics at the École Polytechnique. In 2002, he was named professor at the Collège de France, and the Chair of Applied PDE.



27/05/11