Charles Julien Brianchon
|Born||19 December 1783|
|Died||29 April 1864|
|Alma mater||École Polytechnique|
|Known for||Brianchon's theorem|
He entered into the École Polytechnique in 1804 at the age of eighteen[dubious ], 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.
Brianchon's book Mémoire sur les lignes du second ordre (Paris, 1817) is available online .