François Ledrappier (born 17 January 1946) is a French mathematician.
Ledrappier graduated from the
École Polytechnique
École may refer to:
* an elementary school in the French educational stages normally followed by secondary education establishments (collège and lycée)
* École (river), a tributary of the Seine flowing in région Île-de-France
* École, Savoi ...
in 1967 and received his doctorate from
Pierre and Marie Curie University
Pierre and Marie Curie University (french: link=no, Université Pierre-et-Marie-Curie, UPMC), also known as Paris 6, was a public university, public research university in Paris, France, from 1971 to 2017. The university was located on the Jussi ...
(Paris 6) in 1975 under the supervision of
Jacques Neveu
Jacques Jean-Pierre Neveu (14 November 193217 May 2016) was a Belgian (and then French) mathematician, specializing in probability theory. He is one of the founders of the French school (post WW II) of probability and statistics.
Education and car ...
.
Ledrappier taught at Paris 6 and then became a professor at
South Bend's
University of Notre Dame
The University of Notre Dame du Lac, known simply as Notre Dame ( ) or ND, is a private Catholic research university in Notre Dame, Indiana, outside the city of South Bend. French priest Edward Sorin founded the school in 1842. The main campu ...
, where he is now professor emeritus.
His research deals with asymptotic properties of
group actions and related problems. He has published articles on
dynamical system
In mathematics, a dynamical system is a system in which a Function (mathematics), function describes the time dependence of a Point (geometry), point in an ambient space. Examples include the mathematical models that describe the swinging of a ...
s theory, compact negatively curved manifolds and their abelian covers, linear actions and random walks on
linear groups,
geometric measure theory, and zero entropy algebraic actions of
free abelian group
In mathematics, a free abelian group is an abelian group with a basis. Being an abelian group means that it is a set with an addition operation that is associative, commutative, and invertible. A basis, also called an integral basis, is a subse ...
s.
In 1994 Ledrappier was an invited speaker at the International Congress of Mathematicians in Zurich.
In 2016 he received the
Sophie Germain Prize The Sophie Germain Prize (in French: ''Prix Sophie Germain'') is an annual mathematics prize from the French Academy of Sciences conferred since the year 2003. It is named after the French mathematician Sophie Germain, and comes with a prize of â‚ ...
.
Lauréats des grands prix 2016
His doctoral students include Nalini Anantharaman
Nalini Anantharaman (born 26 February 1976) is a French mathematician who has won major prizes including the Henri Poincaré Prize in 2012.
Life
Nalini Florence Anantharaman was born in Paris in 1976 to two mathematicians. Her father and her mot ...
.[
]
Selected publications
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
References
{{DEFAULTSORT:Ledrappier, François
1946 births
Living people
20th-century French mathematicians
21st-century French mathematicians
University of Paris alumni
Academic staff of the University of Paris
University of Notre Dame faculty