JeanChristophe Yoccoz
JeanChristophe Yoccoz  

JeanChristophe Yoccoz


Born 
Paris, France 
May 29, 1957
Died  September 3, 2016 (aged 59) 
Nationality  French 
Alma mater 
École Normale Supérieure École Polytechnique 
Known for 
Dynamical systems Yoccoz puzzle 
Awards 
Salem Prize (1988) Fields Medal (1994) 
Scientific career  
Fields  Mathematics 
Institutions 
Centre de mathématiques LaurentSchwartz ParisSud 11 University Collège de France 
Doctoral advisor  Michael Herman 
Doctoral students 
Sylvain Crovisier Ricardo PérezMarco 
Website  www.collegedefrance.fr/site/jeanchristopheyoccoz/HommageaJeanChristopheYoccoz.htm 
JeanChristophe Yoccoz (May 29, 1957 – September 3, 2016) was a French mathematician. He was awarded a Fields Medal in 1994, for his work on dynamical systems.^{[1]}^{[2]}
Biography
Yoccoz attended the Lycée LouisleGrand,^{[3]} during which time he was a silver medalist at the 1973 International Mathematical Olympiad and a gold medalist in 1974.^{[4]}^{[5]} He entered the École Normale Supérieure in 1975, and completed an agrégation in mathematics in 1977.^{[6]} After completing military service in Brazil, he completed his Ph.D. under Michael Herman in 1985 at Centre de mathématiques LaurentSchwartz, which is a research unit jointly operated by the French National Center for Scientific Research (CNRS) and Ecole polytechnique.^{[6]}^{[7]}^{[8]} He took up a position at the University of ParisSud in 1987, and became a professor at the Collège de France in 1997, where he remained until his death.^{[2]} He was a member of Bourbaki.^{[9]}
Yoccoz won the Salem Prize in 1988. He was an invited speaker at the International Congress of Mathematicians in 1990 at Kyoto,^{[10]} and was awarded the Fields Medal at the International Congress of Mathematicians in 1994 in Zürich.^{[11]}^{[10]} He joined the French Academy of Sciences and Brazilian Academy of Sciences in 1994, became a chevalier in the French Legion of Honor in 1995, and was awarded the Grand Cross of the Brazilian National Order of Scientific Merit in 1998.^{[5]}
Mathematical work
Yoccoz's worked on the theory of dynamical systems, his contributions include advances to KAM theory, and the introduction of the method of Yoccoz puzzles, a combinatorial technique which proved useful to the study of Julia sets.^{[5]}
References
 ^ O'Connor, John J.; Robertson, Edmund F., "JeanChristophe Yoccoz", MacTutor History of Mathematics archive, University of St Andrews.
 ^ ^{a} ^{b} "Le mathématicien JeanChristophe Yoccoz est mort". Retrieved 6 September 2016.
 ^ Administrator. "Des mathématiciens". Retrieved 6 September 2016.
 ^ "JeanChristophe Yoccoz's results". International Mathematical Olympiad.
 ^ ^{a} ^{b} ^{c} "JeanChristophe Yoccoz † › Heidelberg Laureate Forum". Retrieved 6 September 2016.
 ^ ^{a} ^{b} "Yoccoz biography". Retrieved 6 September 2016.
 ^ "Ciência se despede de matemático francês JeanChristophe Yoccoz". Retrieved 6 September 2016.
 ^ JeanChristophe Yoccoz at the Mathematics Genealogy Project
 ^ Mashaal, Maurice (2006), Bourbaki: a secret society of mathematicians, American Mathematical Society, p. 19, ISBN 9780821839676
 ^ ^{a} ^{b} "International Mathematical Union (IMU)". Retrieved 6 September 2016.
 ^ "Fields Medals and Nevanlinna Prize 1994". Retrieved 6 September 2016.
This article about a French mathematician is a stub. You can help Wikipedia by expanding it. 
 1957 births
 2016 deaths
 20thcentury French mathematicians
 21stcentury French mathematicians
 Fields Medalists
 ParisSud 11 University faculty
 École Normale Supérieure alumni
 Members of the Brazilian Academy of Sciences
 Recipients of the Great Cross of the National Order of Scientific Merit (Brazil)
 Lycée LouisleGrand alumni
 Members of the French Academy of Sciences
 International Mathematical Olympiad participants
 Dynamical systems theorists
 Nicolas Bourbaki
 French mathematician stubs