Gábor Szegő

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Gábor Szegő (born January 20, 1895 in Kunhegyes in Hungary , † August 7, 1985 in Palo Alto ) was a Hungarian mathematician who dealt with analysis.

life and work

Szegö studied in Budapest , Berlin (among others with Ferdinand Georg Frobenius , Hermann Amandus Schwarz , Friedrich Schottky ) and Göttingen (with David Hilbert , Edmund Landau , Alfréd Haar ). During World War I he was in the Austro-Hungarian Army in the artillery and later in the Air Force, where he met Richard von Mises . In 1918 he received his doctorate at the University of Vienna ( A limit theorem on the Toeplitz determinants of a real function ). In 1921 he moved to Berlin, where he completed his habilitation, was a private lecturer, worked with Issai Schur and von Mises and, with George Polya, published the two-volume exercises and theorems from analysis at Springer Verlag in 1925 . In 1926 he succeeded Konrad Knopp as a professor in Königsberg . In 1934, because he was persecuted as a Jew by the National Socialists, he emigrated to the USA and went to Washington University in St. Louis . From 1938 he was a professor at Stanford University , where he stayed until his retirement in 1966.

Szegö worked a. a. about Toeplitz matrices, extremal problems, orthogonal polynomials . The Szegö kernel, Szegö polynomials and the Szegö limit value formula (which arose from a problem by Lars Onsager in the Ising model ) are named after him. The Polya-Szegö is generally considered (in the words of Richard Askey) "the best written and most useful problem book in the history of mathematics".

Szegö was a member of the Königsberg Learned Society, a corresponding member of the Austrian (1960) and honorary member of the Hungarian Academy of Sciences and a member of the American Academy of Arts and Sciences (1976). In 1928 he received the Hungarian Julius König Prize. He had been married since 1919 and had two children.

From 1918 he was a private tutor for the young John von Neumann .

Fonts

  • with George Pólya: Problems and theorems of analysis. 2 volumes, Springer, 1925, 1972 (many editions). ISBN 3-540-04874-X (volume 1) ISBN 3-540-05456-1 (volume 2)
  • with George Pólya: Isoperimetric Problems in mathematical physics. Princeton, Annals of Mathematical Studies.
  • Orthogonal polynomials. AMS, 1939, 1955.
  • with Ulf Grenander : Toeplitz forms and their applications. Chelsea 1958
  • Richard Askey (Editor): Collected Papers of Gábor Szegö. 3 volumes, Birkhäuser 1982

literature

  • Richard Askey, Paul Nevai Gabor Szegö , Mathematical Intelligencer, Vol. 18, 1996, No. 3

Web links

References

  1. ↑ Askey, Nevai Gabor Szegö , Math. Intelligencer, Vol. 18, 1996, No. 3, p. 14
personal data
SURNAME Szegő, Gábor
BRIEF DESCRIPTION Hungarian mathematician
DATE OF BIRTH January 20, 1895
PLACE OF BIRTH Kunhegyes , Hungary
DATE OF DEATH 7th August 1985
Place of death Palo Alto