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Ernest Vessiot
1865–1952
A French mathematician remembered for work on differential equations, he helped lay foundations for what became Picard–Vessiot theory. His career also took him through some of France’s leading institutions, from the École Normale Supérieure to the University of Paris.
1 Audiobook
Leçons de Géométrie Supérieure
by Ernest Vessiot
About the author
Ernest Vessiot was born in Marseille on March 8, 1865, and died in La Bauche, Savoie, on October 17, 1952. He studied at the École Normale Supérieure after entering in 1884, and he went on to teach at Lille, Toulouse, and Lyon before becoming a professor at the University of Paris.
He is best known for his research on differential equations, especially the integrability of ordinary differential equations. His name lives on in Picard–Vessiot theory, a major part of differential algebra that grew from work by Émile Picard and Vessiot.
Beyond his research, Vessiot held important academic roles in French higher education. Sources consulted for this overview indicate that he later taught analytical and celestial mechanics in Paris and also served in senior examination and administrative positions, including work connected with the École Polytechnique and the École Normale Supérieure.