Hans Hamburger
Hans Ludwig Hamburger (5 August 1889, Berlin – 14 August 1956, Cologne) was a German mathematician. He was a professor at universities in Berlin, Cologne and Ankara.[1]
Biography
Hans was the elder son of Karl Hamburger and Margarethe Levy. He was of Jewish heritage, but baptised as a protestant.[2] His father was a lawyer and mixed in learned circles in Berlin. Hans attended the Royal French Gymnasium in Berlin from 1898 to 1907. Hamburger obtained his Ph.D. from the
He was married briefly twice, to Malla Jessen in 1927 and to Vera Schereschevsky two months prior to his death in 1956.[1]
Research
The main results from Hamburger's pre-war research concerned the
umbilic point of a surface. His attribution remains in place today, and his solution of the Carathéodory conjecture in the real analytic case is regarded as complete. He also proved a converse theorem for the Riemann zeta function.[1]
After the war, Hamburger's research primarily concerned
linear transformations of Hilbert space.[1] Hamburger published the textbook, Linear Transformations in n-Dimensional Vector Space. An Introduction to the Theory of Hilbert Space (1951) with Margaret Grimshaw
.
References
- ^ Zbl 0080.00404.
- ^ O'Connor, J J; Robertson, E F. "Hans Ludwig Hamburger". MacTutor History of Mathematics archive. School of Mathematics and Statistics University of St Andrews, Scotland. Retrieved 1 September 2017.[permanent dead link]
- ^ Hans Ludwig Hamburger at the Mathematics Genealogy Project
- ISBN 978-0-691-14041-4.
Further reading
- Freitäger, Andreas, ed. (2008), NL Prof. Dr. Hans Ludwig Hamburger (PDF), Findbücher des Universitätsarchivs Köln (in German), vol. 689, University of Cologne.
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