Otto Szász

Otto Szász, Hungarian Szász Ottó ( born December 11, 1884 in Alsószúcs in Hungary, † December 19, 1952 in Cincinnati ) was a Hungarian mathematician who worked on Analysis.

Szász studied in Budapest and from 1907 to 1908 in Göttingen, and in 1911 received his doctorate at the University of Budapest in Leopold Fejér. In Göttingen he visited, among others Lectures by David Hilbert, Felix Klein, Hermann Minkowski, Otto Toeplitz, Gustav Herglotz, Woldemar Voigt, Ludwig Prandtl. In 1911 he was appointed Privatdozent in Budapest and attended from 1911 to 1914, the universities of Munich, Paris and Göttingen. In 1914 he was a lecturer at the University of Frankfurt am Main and in 1920 professor. By the Nazis in 1933 forced out of the university, he emigrated to the United States, where he found a post on mediation by Norbert Wiener at MIT and Brown University. From 1936 he was professor at the University of Cincinnati, where he remained for the rest of his career, except for a one-year research stay at the Institute of Numerical Mathematics of the University of Los Angeles.

Szász solved some problems that made ​​Oskar Perron in his textbook on continued fractions, gave a simpler ( than before by Chaim Müntz ) evidence of a problem by Sergei Bernstein in approximation theory ( approximation of continuous functions on the unit interval by power functions, form their powers of a positive result with divergent reciprocal of total) and of a problem by Edmund Landau beyond the maximum of partial sums of power series. Another area of ​​work were Fourier series (eg Tauber sets, Gibbs phenomenon).

In 1939 he received the Julius König Prize of the Hungarian Academy of Sciences.

His PhD is one of Kurt Mahler ( 1927).

Writings

• Lipisch (ed.): Collected Works of Otto Szász. University of Cincinnati Press, 1955 ( almost 1500 pages ).
• About Fourier series. Annual Report DMV, Bd.32, 1923.
• About the approximation of continuous functions by linear aggregates of magnitude. Mathematische Annalen, Vol 77, 1916, S.482, proof of the conjecture of S. Bernstein.