Xavier Buff

Xavier Buff
Xavier Buff, Oberwolfach 2008
Born (1971-12-16) December 16, 1971 (age 52)
Alma materUniversity of Paris-Sud
OccupationMathematician

Xavier Buff (born 16 December 1971) is a French mathematician, specializing in dynamical systems.

Buff received in 1996 his Ph.D. (promotion) from the University of Paris-Sud under Adrien Douady with thesis Points fixe de renormalisation.[1] As a postdoc he was in the academic year 1997–1998 the H. C. Wang Assistant Professor at Cornell University. At the Paul Sabatier University (Université Toulouse III) he became in 1998 a maître de conférences, achieved in 2006 his habilitation with habilitation thesis Disques de Siegel et ensembles de Julia d'aire strictement positive, and became in 2008 a full professor.[2]

In 2010 he was an invited speaker at the International Congress of Mathematicians in Hyderabad and gave a talk Quadratic Julia Sets with Positive Area based on joint work with Arnaud Chéritat. In 2006 Buff and Chéritat received the Prix Leconte of the French Academy of Sciences for their collaborative work on Julia sets with positive mass; they proved the existence of quadratic polynomials that have positive Lebesgue measure.[3] In 2008 Buff, Chéritat, and Pascale Roesch received a Young Researchers grant[4] from Agence Nationale de la Recherche. In 2009 Buff became a member of the Institut Universitaire de France.

  1. ^ Xavier Buff at the Mathematics Genealogy Project
  2. ^ Buff's homepage at Université Toulouse III
  3. ^ Jean-Christophe Yoccoz: Ensembles de Julia de mesure positive et disques de Siegel des polynômes quadratiques, d’après X. Buff et A. Chéritat, Séminaire Bourbaki 966, 2006
  4. ^ Project number ANR-08-JCJC-0002-01, At the Boundary of Chaos