Louis Bertrand Castel (5 November 1688 – 11 January 1757) was a French mathematician born in Montpellier, who entered the order of the Jesuits in 1703.
Having studied literature, he afterwards devoted himself entirely to mathematics and natural philosophy.
Charles-Germain de Saint-Aubin; Charles Germain de Saint-Aubin; Charles Germain Saint-Aubin; Saint-Aubin; Sieur de Saint-Aubin; Charles Germain De Saint-Aubin