Andrée Ehresmann
Andrée Ehresmann (born Andrée Bastiani on September 7, 1935) is a French mathematician who specializes in category theory. She worked as a CNRS researcher from 1957 to 1963. She earned her PhD in 1962 at the University of Paris under Gustave Choquet; her thesis was on differentiability in locally convex spaces and distructures.
In 1967 she became a professor at IRCAM, University of Picardie Jules Verne, and she is now emeritus there. Ehresmann has published more than a hundred works in Analysis (differential calculus and infinite-dimensional distributions), in Category Theory (with her husband Charles Ehresmann on sketches and internal categories, multiple categories, and closed monoidal structures), and in modeling complex autonomous systems such as Memory Scalable Systems.
With J.-P. Vanbremeersch she developed Memory Evolutive Systems, a mathematical model for living systems with hierarchical components and multiple time scales, such as biological, neuro-cognitive, and social systems. The theory uses dynamic categories to study evolving memory systems, emergence, and self-organization.
She is the director of the mathematics journal Cahiers de Topologie et Géométrie Différentielle Catégoriques.
This page was last edited on 2 February 2026, at 22:42 (CET).