Frédéric Hélein (born 22 April 1963) is a French mathematician. He is university professor at

Paris Diderot University Paris Diderot University, also known as Paris 7 (), was a French university located in Paris, France. It was one of the inheritors of the historic University of Paris, which was split into 13 universities in 1970. Paris Diderot merged with Pari ...

. Hélein earned his doctorate at

École polytechnique (, ; also known as Polytechnique or l'X ) is a ''grande école'' located in Palaiseau, France. It specializes in science and engineering and is a founding member of the Polytechnic Institute of Paris. The school was founded in 1794 by mat ...

under supervision of

Jean-Michel Coron Jean-Michel Coron (born August 8, 1956) is a French mathematician. He first studied at École Polytechnique, where he worked on his PhD thesis advised by Haïm Brezis. Since 1992, he has studied the control theory of partial differential equat ...

. In 1998 Hélein was an Invited Speaker of the

International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the IMU Abacus Medal (known before ...

in Berlin. He won the 1999

Fermat Prize The Fermat prize of mathematics, mathematical research biennially rewards research works in fields where the contributions of Pierre de Fermat have been decisive: * Statements of variational principles * Foundations of probability and analytic geo ...

, jointly with Fabrice Bethuel, for several important contributions to the theory of

variational calculus The calculus of variations (or variational calculus) is a field of mathematical analysis that uses variations, which are small changes in functions and functionals, to find maxima and minima of functionals: mappings from a set of functions t ...

Notable publications

Research articles * Frédéric Hélein. ''Régularité des applications faiblement harmoniques entre une surface et une variété riemannienne.'' C. R. Acad. Sci. Paris Sér. I Math. 312 (1991), no. 8, 591–596. * Fabrice Bethuel, Haïm Brezis, and Frédéric Hélein. ''Asymptotics for the minimization of a Ginzburg-Landau functional.'' Calc. Var. Partial Differential Equations 1 (1993), no. 2, 123–148. Books * Fabrice Bethuel, Haïm Brezis, and Frédéric Hélein. ''Ginzburg-Landau vortices.'' Progress in Nonlinear Differential Equations and their Applications, 13. Birkhäuser Boston, Inc., Boston, MA, 1994. xxviii+159 pp. * Frédéric Hélein. ''Constant mean curvature surfaces, harmonic maps and integrable systems.'' Notes taken by Roger Moser. Lectures in Mathematics ETH Zürich. Birkhäuser Verlag, Basel, 2001. 122 pp. * Frédéric Hélein. ''Harmonic maps, conservation laws and moving frames.'' Translated from the 1996 French original. With a foreword by James Eells. Second edition. Cambridge Tracts in Mathematics, 150. Cambridge University Press, Cambridge, 2002. xxvi+264 pp.

References

External links

Website at Institut de Mathématiques de Jussieu
* 1963 births Living people 21st-century French mathematicians University of Paris alumni Variational analysts {{France-mathematician-stub