1816, Feb 71900, Jun 12
a French mathematician, astronomer, and meteorologist. He was born and died in Périgueux, France. He is best known for being an (independent) co-discoverer of the Frenet–Serret formulas. He also was director of an astronomical observatory at Lyon. He wrote six out of the nine formulas, which at that time were not expressed in vector notation, nor using linear algebra. In 1856 his calculus primer was first published, which ran through seven editions.
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