Adrien Douady, 2003
25 September 1935|
La Tronche, Isère
|Died||2 November 2006
|Institutions||Paris-Sud 11 University|
|Alma mater||École Normale Supérieure|
|Doctoral advisor||Henri Cartan|
|Doctoral students||Xavier Buff
John H. Hubbard
Adrien Douady (French: [dwadi]; 25 September 1935 – 2 November 2006) was a French mathematician. He was one of the most prolific French mathematicians of the 20th century. His son, Raphael Douady, is also a mathematician and an economist.
Douady was a student of Henri Cartan at the École Normale Supérieure, and initially worked in homological algebra. His thesis concerned deformations of complex analytic spaces. Subsequently, he became more interested in the work of Pierre Fatou and Gaston Julia and made significant contributions to the fields of analytic geometry and dynamical systems. Together with his former student John H. Hubbard, he launched a new subject, and a new school, studying properties of iterated quadratic complex mappings. They made important mathematical contributions in this field of complex dynamics, including a study of the Mandelbrot set. One of their most fundamental results is that the Mandelbrot set is connected; perhaps most important is their theory of renormalization of (polynomial-like maps). The Douady rabbit, a quadratic filled Julia set, is named after him.
Douady taught at the University of Nice and was a Professor at the Paris-Sud 11 University, Orsay. He was a member of Bourbaki and an invited speaker at the International Congress of Mathematicians in 1966 at Moscow and again in 1986 in Berkeley.
He died after diving into the cold Mediterranean from a favourite spot near his vacation home in the Var. His friends remember his many jokes, songs and joy in life.
- Adrien Douady at the Mathematics Genealogy Project
- http://www.math.jacobs-university.de/adrien with a guest book to share your memories
- Pictures with Adrien Douady