Mathematician:Erhard Schmidt

Baltic German mathematician whose work significantly influenced the direction of mathematics in the twentieth century.

Nationality
German

History

 * Born: 13 January 1876 in Dorpat, Estonia (Russian Empire) (now Tartu, Estonia)
 * Died: 16 December 1959 in Berlin, Germany

Theorems and Definitions

 * Gram-Schmidt Orthogonalization, also known as Gram-Schmidt Orthonormalization, or the Gram-Schmidt Process (with Jørgen Pedersen Gram)
 * Hilbert-Schmidt Operator (with David Hilbert)
 * Lyapunov-Schmidt Reduction (with Aleksandr Mikhailovich Lyapunov)
 * Schmidt Decomposition
 * Hilbert-Schmidt Integral Operator (with David Hilbert)

Books and Papers

 * 1929: On certainty in mathematics