Augustin Louis Cauchy was born in Paris, France on August 21, 1789. He died on May 23, 1857 in Sceaux, France. He is one of the most published mathematicians, having published 789 papers. Cauchy pioneered the study of analysis and the theory of permutation groups. He also researched in convergence and divergence of infinite series, differential equations, determinants, probability and mathematical physics, in the field of optics.

Many mathematical terms and formulas bear his name, including:

Cauchy Sequence
Cauchy Number
Cauchy Integral Formula
Cauchy-Schwarz Inequality
Cauchy-Riemann Equations
Cauchy-Goursat Theorem
Cauchy's Inequality
Cauchy-Kovalevskaya Existence Theorem for the solution of partial differential equations