Polish mathematician and university tutor, known primarily for an extensive monograph on the theory of integrals and his works on measure theory.
Killed by the Gestapo supposedly while attempting to escape from prison where he was being held for the crime of being Jewish.
- Born: 30 December 1897 in Kalisz, Russian Empire (now Poland)
- Died: 23 November 1942 in Warsaw, Poland
Theorems and Definitions
- Denjoy-Young-Saks Theorem (with Arnaud Denjoy and Grace Emily Chisholm Young)
- Vitali-Hahn-Saks Theorem (with Giuseppe Vitali and Hans Hahn)
- Banach-Saks Space (with Stefan Banach)
- 1922: A contribution to the theory of surfaces and plane domains
- 1930: Sur la convergence forte dans le champ $L^p$ (with Stefan Banach)
- 1933: Theory of the integral
- 1938: Analytic Functions (with Antoni Zygmund)