Étienne Bobillier

Étienne Bobillier (born April 17, 1798 in Lons-le-Saunier , † March 22, 1840 in Châlons-en-Champagne ) was a French mathematician.

Bobillier received a good education. His father was a wallpaper merchant and died in 1806, after which the business was continued by his mother. He studied at the Ecole Polytechnique from 1817 (after having passed the tough entrance exams), like his older brother, who studied there from 1813 and became an officer. Bobillier was a student of Siméon Denis Poisson , but had to drop out of studies after a year for financial reasons and in 1818 became a teacher at the École des Arts et Métiers in Châlons-sur-Marne . He was very successful as a math teacher and he published an algebra textbook, the tenth edition of which was published in 1879. He applied for a professorship at the Collège Royale in Amiens , but was transferred to Angers in 1829 as headmaster (director of studies) . In the Revolution of 1830 he served in the National Guard in Angers in suppressing the revolt. In 1832 he was back in Châlons-sur-Marne, published a geometry textbook (the 14th edition appeared in 1870) and became a professor there. From 1836 his health deteriorated, but he refused to take a vacation and continued his lessons. In 1837 he had married.

He dealt mainly with geometry and was influenced by Jean-Victor Poncelet , Joseph Gergonne , Michel Chasles and Gaspard Monge . He dealt with the geometry of algebraic surfaces and curves, polar of curves, was one of the first to apply the transformation by reciprocal radii in the theory of conic sections and dealt with statics (catenary) and kinematics.

In 1839 he became President of the Society for Agriculture, Commerce, Science and Art of the Départment Marne, was a member of several other regional French scientific societies and in the same year Knight of the Legion of Honor .

A moon crater is named after him.

Fonts

Cours de géométrie, 1832
Principes d'algèbre, 3 volumes, 1825 to 1826

Web links

John J. O'Connor, Edmund F. Robertson : Étienne Bobillier. In: MacTutor History of Mathematics archive .

Individual evidence

↑ Taken from Charles Louis Dinet in mathematics, who was known for his rigor and ten years later failed Évariste Galois . Bobillier finished best in mathematics at Dinet.

personal data
SURNAME	Bobillier, Etienne
BRIEF DESCRIPTION	French mathematician
DATE OF BIRTH	April 17, 1798
PLACE OF BIRTH	Lons-le-Saunier
DATE OF DEATH	March 22, 1840
Place of death	Châlons-en-Champagne

[1] Taken from Charles Louis Dinet in mathematics, who was known for his rigor and ten years later failed Évariste Galois . Bobillier finished best in mathematics at Dinet.