Cauchy[kō-shēˈ], Baron Augustin Louis 1789-1857.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
, Baron Augustin Louis 1789-1857.
French mathematician whose Cours d'Analyse (1821) introduced modern rigor into calculus. He founded the theory of functions of a complex variable and made contributions to the mathematical theory of elasticity and the wave theory of light.