Mathematician:Arthur Sard

American mathematician, famous for his work in differential topology and in spline interpolation.

Nationality
American

History

 * Born: 28 July 1909, New York City
 * Died: 31 August 1980, Basel

Theorems and Definitions

 * Morse-Sard Theorem (with ) (also known as Sard's Theorem or Sard's Lemma)

Books and Papers

 * 1963: Linear approximation (2nd ed.)