Étienne Ghys | Académie des sciences

Date of birth: 1954
Élu Académicien en November 2004
Emeritus Director of Research at the CNRS, Pure and Applied Mathematics Unit, ENS Lyon

Elected correspondent on April 11, 1994, then member on November 30, 2004
Perpetual Secretary of the First Division since January 2019
Section: Mathematics

Académicien

Étienne Ghys

Secrétaire perpétuel

CoESO
Comité histoires des sciences et épistémologie
Comité sur l’enseignement des sciences
Comité d'Alembert

Mathématique

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Biography

Étienne Ghys is a mathematician. Director of research emeritus at the CNRS, he contributed to the creation and development of the mathematics laboratory at ENS Lyon. His scientific work focuses on geometry, topology and dynamical systems. His results, for example, have enabled us to better understand the topology of the famous Lorenz butterfly, a paradigm of chaos theory. In recent years, he has been involved in a number of outreach initiatives, including the production of mathematical films and the founding of an online journal aimed at the general public. He is particularly interested in educational issues. He has been awarded the CNRS Silver Medal (1991), the Clay Prize for the Dissemination of Mathematics (2015) and the CNRS Mediation Medal (2022). He has been invited four times to the International Congress of Mathematicians (1990, 2006, 2010 and 2018), holds honorary doctorates from Geneva (2008) and Neuchâtel (2018), and is a member of the Academies of Lyon, Brazil, Mexico and Europe. Elected perpetual secretary in January 2019.

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