Ernest Vessiot
Encyclopedia
Ernest Vessiot was a French
mathematician
. He was born in Marseille
, France
and died in La Bauche
, Savoie
, France. He entered the École Normale Supérieure
in 1884.
He was Maître de Conférences at Lille University of Science and Technology in 1892-1893, then moved at Toulouse and Lyon.
After 1910, he was a professor of analytical mechanics
and celestial mechanics
at the University of Paris
. He presided over entrance examinations at the École Polytechnique
. As director of École Normale Supérieure
until 1935,
he overviewed the construction of its new physics, chemistry and geology buildings of 24, Rue Lhomond.
He was elected a member of the Académie des Sciences in 1943.
Vessiot's work on Picard–Vessiot theory
dealt with the integrability of ordinary differential equations.
French people
The French are a nation that share a common French culture and speak the French language as a mother tongue. Historically, the French population are descended from peoples of Celtic, Latin and Germanic origin, and are today a mixture of several ethnic groups...
mathematician
Mathematician
A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....
. He was born in Marseille
Marseille
Marseille , known in antiquity as Massalia , is the second largest city in France, after Paris, with a population of 852,395 within its administrative limits on a land area of . The urban area of Marseille extends beyond the city limits with a population of over 1,420,000 on an area of...
, France
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...
and died in La Bauche
La Bauche
La Bauche is a commune in the Savoie department in the Rhône-Alpes region in south-eastern France.-References:*...
, Savoie
Savoie
Savoie is a French department located in the Rhône-Alpes region in the French Alps.Together with the Haute-Savoie, Savoie is one of the two departments of the historic region of Savoy that was annexed by France on June 14, 1860, following the signature of the Treaty of Turin on March 24, 1860...
, France. He entered the École Normale Supérieure
École Normale Supérieure
The École normale supérieure is one of the most prestigious French grandes écoles...
in 1884.
He was Maître de Conférences at Lille University of Science and Technology in 1892-1893, then moved at Toulouse and Lyon.
After 1910, he was a professor of analytical mechanics
Analytical mechanics
Analytical mechanics is a term used for a refined, mathematical form of classical mechanics, constructed from the 18th century onwards as a formulation of the subject as founded by Isaac Newton. Often the term vectorial mechanics is applied to the form based on Newton's work, to contrast it with...
and celestial mechanics
Celestial mechanics
Celestial mechanics is the branch of astronomy that deals with the motions of celestial objects. The field applies principles of physics, historically classical mechanics, to astronomical objects such as stars and planets to produce ephemeris data. Orbital mechanics is a subfield which focuses on...
at the University of Paris
University of Paris
The University of Paris was a university located in Paris, France and one of the earliest to be established in Europe. It was founded in the mid 12th century, and officially recognized as a university probably between 1160 and 1250...
. He presided over entrance examinations at the École Polytechnique
École Polytechnique
The École Polytechnique is a state-run institution of higher education and research in Palaiseau, Essonne, France, near Paris. Polytechnique is renowned for its four year undergraduate/graduate Master's program...
. As director of École Normale Supérieure
École Normale Supérieure
The École normale supérieure is one of the most prestigious French grandes écoles...
until 1935,
he overviewed the construction of its new physics, chemistry and geology buildings of 24, Rue Lhomond.
He was elected a member of the Académie des Sciences in 1943.
Vessiot's work on Picard–Vessiot theory
Picard–Vessiot theory
In differential algebra, Picard–Vessiot theory is the study of the differential field extension generated by the solutions of a linear differential equation, using the differential Galois group of the field extension. A major goal is to describe when the differential equation can be solved by...
dealt with the integrability of ordinary differential equations.
Works
- Lecons De Geometrie Superieure (Herrmann, 1919)