Cédric Villani, French mathematician and 2010 Fields medalist, hold a lecture on “Synthetic theory of Ricci curvature; when Monge meets Riemann” at the 4th Meeting on Contemporary Mathematics at the School of Mathemtics, Institute for Studies in Theoretical Physics and Mathematics (IPM). He also presented “Of planets, stars and eternity (stabilization and long-time behavior in classical celestial mechanics)” at Sharif University of Technology, University of Tehran and IPM-Isfahan.
About Cédric Villani Cédric Villani is a professor of mathematics at Université de Lyon and the director of Institut Henri Poincaré in Paris. In 2010, Villani was awarded the Fields Medal for his proofs of nonlinear Landau damping and convergence to equilibrium for the Boltzmann equation. His other honors and awards include the Fermat Prize, the Henri Poincaré Prize of the International Association of Mathematical Physics, the Prize of the European Mathematical Society and the Jacques Herbrand Prize of the French Academy of Sciences.
Villani’s visit to Sharif University of Technology: Sharif University of Technology | News
Villani’s visit to University of Tehran: University of Tehran | News
Related article: The other Iran | Photos: Graduation ceremony of Sharif University
Sources: School of Mathematics, IPM | Visitors (PDF), Jamejam Images (Photos: Taherkenareh)
The other Iran 
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French mathematician Cedric Villani, 2010 Fields Medal winner, visited Iran