By taking a look at the French blog Images des mathématiques, I learned that Elon Lindenstrauss and Cédric Villani were awarded the 2009 edition of the Fermat prize. Below you can see a description of the prize (taken from Fermat prize page):

[Update (Oct. 28): Brief descriptions (in French) of the works of E. Lindenstrauss and C. Villani (also taken from Fermat prize page) were included]

*The FERMAT PRIZE rewards research works in fields where the contributions of
Pierre de FERMAT have been decisive :*

** Statements of Variational Principles
* Foundations of Probability and Analytical Geometry
* Number theory.*

*The spirit of the prize is focused on rewarding the results of researches accessible to the greatest number of professional mathematicians within these fields.*

*The amount of the Fermat prize has been fixed at 20 000 Euros. The FERMAT prize is
awarded once every two years in Toulouse ; the eleventh award will be announced in
October 2009.*

*Winners of the preceding editions: A. Bahri, K.A. Ribet (1989) – J.-L. Colliot-Thélène
(1991) – J.-M. Coron (1993) – A.J. Wiles (1995) – M. Talagrand (1997) – F. Bethuel,
F. Hélein (1999) – R. L. Taylor, W. Werner (2001) – L. Ambrosio (2003) – P. Colmez,
J.F. Le Gall (2005) – C. Khare (2007).*

*————————————————————————————————————-*

### Le prix Fermat 2009 de Recherche en Mathématiques a

### été attribué à :

**Elon LINDENSTRAUSS** (Princeton University)

pour ses travaux en théorie ergodique et leurs applications en théorie des nombres,

et à

**Cédric VILLANI** (ENS de Lyon)

pour ses contributions à la théorie du transport optimal et à l’étude des équations d’évolution non linéaires.

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