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Post-edited  Interview at CIRM: Alexander Bufetov
Bufetov, Alexander (Personne interviewée) | CIRM (Editeur )

Alexander Bufetov got his Diploma in Mathematics at the Independent University of Moscow in 1999 and his PhD at Princeton University in 2005. After one year as a Postdoctoral student at the University of Chicago, he was employed as an Assistant Professor at Rice University where he also held the 'Edgar Odell Lovett Junior Chair'. In 2009, Alexander Bufetov joined the Steklov Mathematical Institute where he passed his habilitation thesis in order to supervise PhD students. In 2012, he became a CNRS Senior Researcher for the LATP (Laboratoire d’Analyse, Topologie, Probabilités) department at Aix-Marseille University. Alexander Bufetov has received several prizes: a Prize by Moscow Mathematical Society in 2005, a grant by the Sloan Foundation and a grant from the President of the Russian Federation in 2010 and also a grant from the Simons Foundation at the Independent University of Moscow in 2011. His research area is the Ergodic theory of dynamical systems. Alexander Bufetov got his Diploma in Mathematics at the Independent University of Moscow in 1999 and his PhD at Princeton University in 2005. After one year as a Postdoctoral student at the University of Chicago, he was employed as an Assistant Professor at Rice University where he also held the 'Edgar Odell Lovett Junior Chair'. In 2009, Alexander Bufetov joined the Steklov Mathematical Institute where he passed his habilitation thesis in order ...

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Post-edited  Interview at CIRM: Inkang Kim
Kim, Inkang (Personne interviewée) | CIRM (Editeur )

Inkang Kim works on hyperbolic geometry and symmetric spaces. He works on rigidity and flexibility of discrete groups acting on symmetric spaces. For rigidity side, he proved the marked length rigidity of Zariski dense subgroups of semisimple Lie groups. In the line of Weil's local rigidity, with his collaborators he proved the local rigidity of real and complex hyperbolic lattices in quaternionic hyperbolic spaces. For flexibility side, with Pierre Pansu he characterized the criterion for a deformability to a Zariski dense representation of a surface group representation in semisimple Lie groups. Specially in hyperbolic 3-manifolds, with other collaborators he generalized William Thurston's double limit theorem to any hyperbolic 3-manifold with compressible boundary. Inkang Kim works on hyperbolic geometry and symmetric spaces. He works on rigidity and flexibility of discrete groups acting on symmetric spaces. For rigidity side, he proved the marked length rigidity of Zariski dense subgroups of semisimple Lie groups. In the line of Weil's local rigidity, with his collaborators he proved the local rigidity of real and complex hyperbolic lattices in quaternionic hyperbolic spaces. For flexibility side, with ...

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Post-edited  Interview at CIRM: Terry Lyons
Lyons, Terry (Personne interviewée) | CIRM (Editeur )

In 2013, probability was the key subject of the thematic month, Terry J LYONS took part in the conference dedicated to French mathematician Etienne PARDOUX in celebration of his 65th birthday. An opportunity for us to look into the areas of mathematics that LYONS, a famous British mathematician, chooses to concentrate on... Interview.

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Post-edited  Interview au CIRM : Pierre-Louis Lions
Lions, Pierre-Louis (Personne interviewée) | CIRM (Editeur )

Pierre-Louis LIONS a participé au mois thématique 2013 au CIRM consacré aux probabilités.
Médaille Fields 1994, Pierre-Louis LIONS est le fils du mathématicien Jacques-Louis Lions. Reçu major à Polytechnique et à l'ENS, Pierre-Louis Lions entre à l'École normale supérieure (Paris) en 1975. Refusant de passer l'agrégation de mathématiques, il préfère se consacrer à la recherche en mathématiques appliquées et obtient son doctorat, dirigé par Haïm Brézis, en 1979 à l'Université Pierre-et-Marie-Curie. De 1979 à 1981, il poursuit ses recherches au CNRS puis devient professeur à l'université de Paris-Dauphine. Pierre-Louis Lions est professeur de mathématiques appliquées à l'École polytechnique depuis 1992 et professeur invité au Conservatoire national des arts et métiers en 2000. Il est nommé professeur au Collège de France en 2002, où il est titulaire de la chaire " Équations aux dérivées partielles et applications ".
Les travaux mathématiques de Pierre-Louis Lions portent sur la théorie des équations différentielles partielles non linéaires. On lui doit notamment un travail conjoint avec M. G. Crandall sur les solutions de viscosité des équations de Hamilton-Jacobi, des avancées sur l'équation de Boltzmann et l'équation de Navier-Stokes, et le très célèbre principe de concentration-compacité. Depuis 2006, les travaux de Pierre-Louis Lions, ainsi que ses cours au Collège de France, portent sur la théorie des jeux à champ moyen qu'il a développée avec Jean-Michel Lasry.
En septembre 2006, il a été nommé membre du Haut conseil de la science et de la technologie.
En 2009, il est nommé président du conseil d'administration de l'École normale supérieure en remplacement du conseiller d'État Jean-Claude Mallet.
Il a encadré de nombreuses thèses dont celle de Cédric Villani, lauréat de la médaille Fields en 2010.
Pierre-Louis LIONS a participé au mois thématique 2013 au CIRM consacré aux probabilités.
Médaille Fields 1994, Pierre-Louis LIONS est le fils du mathématicien Jacques-Louis Lions. Reçu major à Polytechnique et à l'ENS, Pierre-Louis Lions entre à l'École normale supérieure (Paris) en 1975. Refusant de passer l'agrégation de mathématiques, il préfère se consacrer à la recherche en mathématiques appliquées et obtient son doctorat, dirigé par Haïm ...

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Post-edited  Interview au CIRM : Etienne Ghys
Ghys, Etienne (Personne interviewée) | CIRM (Editeur )

Etienne Ghys is a French mathematician. His research focuses mainly on geometry and dynamical systems, though his mathematical interests are broad. He also expresses much interest in the historical development of mathematical ideas, especially the contribution of Henri Poincaré. He co-authored the computer graphics mathematical movie Dimensions: A walk through mathematics! Alumnus of the École Normale Supérieure de Saint-Cloud, he is currently a CNRS "directeur de recherche" at the École Normale Supérieure in Lyon. He is also editor-in-chief of the Publications Mathématiques de l'IHÉS and a member of the French Academy of Sciences. Etienne Ghys is a French mathematician. His research focuses mainly on geometry and dynamical systems, though his mathematical interests are broad. He also expresses much interest in the historical development of mathematical ideas, especially the contribution of Henri Poincaré. He co-authored the computer graphics mathematical movie Dimensions: A walk through mathematics! Alumnus of the École Normale Supérieure de Saint-Cloud, he is currently a ...

pair of periodic orbits is negatively linked. This property (introduced by Ghys in 2007) implies the existence of as many Bikrhoff sections as possible, and therefore allows to reduce the flow to a suspension in many different ways. It then becomes natural to look for examples. A construction of Birkhoff (1917) suggests that geodesic flows ...

37C27 ; 37C15 ; 37C10 ; 57M25

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Post-edited  My favorite groups
Ghys, Etienne (Auteur de la Conférence) | CIRM (Editeur )

The world of groups is vast and meant for wandering! During this week, I will give seven short talks describing seven groups, or class of groups, that I find fascinating. These seven talks will be independent and I will have no intention of being exhaustive (this would be silly since there are uncountably many groups, even finitely generated!). In each talk, I will introduce the hero, state one or two results, and formulate one or two conjectures. The world of groups is vast and meant for wandering! During this week, I will give seven short talks describing seven groups, or class of groups, that I find fascinating. These seven talks will be independent and I will have no intention of being exhaustive (this would be silly since there are uncountably many groups, even finitely generated!). In each talk, I will introduce the hero, state one or two results, and formulate one or two c...

57S30 ; 58D05