Charles Julien Brianchon
19 December 1783
29 April 1864
Life[edit]
He entered into the École Polytechnique in 1804 at the age of eighteen, and studied under Monge, graduating first in his class in 1808, after which he took up a career as a lieutenant in Napoleon's artillery. Later, in 1818, Brianchon became a professor in the Artillery School of the Royal Guard at Vincennes.
Work[edit]
Brianchon is best known for his proof of Brianchon's theorem (1810).
Brianchon's book Mémoire sur les lignes du second ordre (Paris, 1817) is available online [1].