Sylvestre François Lacroix
Sylvestre François Lacroix was a French mathematician.
Traité élémentaire de trigonométrie rectiligne et sphérique, et d'application de l'algèbre à la géométrie, 1813
Gaspard Monge, Comte de Péluse was a French mathematician, commonly presented as the inventor of descriptive geometry, technical drawing, and the father of differential geometry. During the French Revolution he served as the Minister of the Marine, and was involved in the reform of the French educational system, helping to found the École Polytechnique.
Gaspard Monge
Monge's bust in Le Père Lachaise Cemetery in Paris