Andrée Ehresmann
Andrée Ehresmann | |
|---|---|
 Andrée Ehresmann in December 2010 | |
| Born | Andrée Bastiani 7 July 1935 Nice France |
| Died | 21 August 2026 (aged 91) Amiens, France |
| Alma mater | University of Paris |
| Spouse | Charles Ehresmann |
| Scientific career | |
| Fields | Mathematics |
| Workplaces | University of Picardy Jules Verne |
| Thesis | Différentiabilité dans les espaces localement convexes. Distructures (1962) |
| Gustave Choquet | |
| Website | https://mes-ehres.fr/indexAE.htm |
Andrée Ehresmann (9 July 1935 – 21 August 2026) was a French mathematician who specialised in category theory.[1]
Education and career
Ehresmann was a researcher at CNRS from 1957 to 1963. She was awarded a Ph.D. in 1962 at University of Paris under the supervision of Gustave Choquet. Her thesis was entitled Différentiabilité dans les espaces localement convexes. Distructures [Differentiability in locally convex spaces. Distructures].[2]
In 1967 she became a professor at IRCAM, at the University of Picardie Jules Verne, where she was emeritus professor.[3]
Research
Ehresmann published over 100 works on Analysis (Differential Calculus and Infinite-dimensional Distributions, Guiding Systems and Optimization Problems), Category Theory (with her husband, Charles Ehresmann: sketches and internal categories, multiple categories, closed monoidal structures) and the modeling of complex autonomous systems (Memory Scalable Systems, including the MENS model for neuro-cognitive systems).
She developed, with J.-P. Vanbremeersch a model of Memory Evolutive Systems, which proposes a mathematical model for 'living' systems with a hierarchy of complex components with multiple temporalities, such as biological, neuro-cognitive, or social systems. Based on a theory of 'dynamic' categories, evolving memory systems can analyze complexity, emergence and self-organization.
Ehresmann was the director of the mathematical journal Cahiers de Topologie et Géométrie Différentielle Catégoriques.[4]
Death
Ehresmann died in Amiens, France on 21 August 2026, at the age of 91.[5][6]
Notes and references
- ↑ "Ehresmann, Andrée (1935...)". catalogue.bnf.fr (in French). Retrieved 28 February 2018.
- ↑ "sous". www-ext.impmc.upmc.fr. Retrieved 2022-02-13.
- ↑ Ferri, Massimo (6 May 2015). "Ircam, Parigi: un tuffo nella matemusica" [IRCAM, Paris: a dive into mathematics]. Il Fatto Quotidiano (in Italian). Archived from the original on 2015-05-09. Retrieved 28 February 2018.
- ↑ "cahiers de topologie et géométrie différentielle catégoriques". Retrieved 2019-07-28.
- ↑ picard, Courrier (2026-08-21). "Hommage à Andrée Ehresmann". Courrier picard (in French). Retrieved 2026-08-25.
- ↑ Chataur Melchio, David (21 August 2026). "Décès de Andrée Ehresmann". Société mathématique de France. Retrieved 2026-08-25.