**Élie Joseph Cartan** He was a French mathematician who was born on April 9, 1869 in Dolomieu. He was the father of mathematician Henri Cartan. He studied at the Paris Higher Normal School in 1888. After his doctorate in 1894, he worked in Montpellier and Lyon, becoming a professor at the University of Nancy in 1903. He obtained a post in Paris in 1909 and became a Sorbonne professor in 1912. It reformed in 1942.

He has done fundamental work in the theory of groups of *Lie* and its geometric uses. It also made significant contributions to mathematical physics, differential geometry and group theory. He died in Paris on May 6, 1951, after a long illness.