Aleksander Rajchman

Aleksander Rajchman ( born November 13, 1890 in Warsaw, † July or August 1940 in Sachsenhausen concentration camp ) was a Polish mathematician who worked on real analysis and statistics.

Life

Rajchman was born in what was then the Russian Empire belonging Congress Poland and studied in Paris, where in 1910 his licentiate acquired. In 1919 he became an assistant at the University of Warsaw. In 1921 he received his doctorate at Hugo Steinhaus at the University of Lvov (Lviv ). He then became 1922 professor at the Free University of Warsaw, and his habilitation in 1925 lecturer at Warsaw University, where he taught until 1939. In 1940 he was arrested as a Jew by the Gestapo and died in Sachsenhausen concentration camp.

In the 1930s he was also a guest lecturer at the seminar of Jacques Hadamard at the College de France. He dealt in particular with Fourier series. His most famous student was Antoni Zygmund, with whom he published three works and built up a significant school of harmonic analysis in Chicago. Zygmund devoted his monumental work Trigonometric Series Rajchman his teacher ( and his student Józef Marcinkiewicz ) and wrote in 1987 an obituary for Rajchman. The Banach Centre organized in 2000 a symposium in honor of Marcinkiewicz, Rajchman, Zygmund.

After Rajchman Rajchman algebras and Rajchman dimensions are named.