George G. Lorentz

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George Gunter Lorentz (born February 25, 1910 in Saint Petersburg , † January 1, 2006 in Chico , California ) was a Russian-American mathematician.

Lorentz came from the German population of Russia - his father Rudolf Fedorowitsch Lorentz was a railway engineer and his mother Milena Nikolajewna Tschegodajew came from the Russian nobility. Since his father refused to put down a strike in 1906, he was no longer allowed to work for the state railroad and he worked for private railroad companies in the Caucasus. The family survived the turmoil of the revolution and the civil war near Sochi and then moved to Tbilisi , where he began studying at the Technical University in 1926. From 1928 he studied at the University of Leningrad with the diploma degree in 1931 and the candidate degree in 1935 (corresponding to a doctorate). At that time he published several papers, also on the topic of his dissertation, Bernstein polynomials . After that he was a lecturer in Leningrad. After the German occupation of the area around Leningrad, he was initially able to be evacuated to the Caucasus, where he was overrun by the German occupation and classified as a German and was taken to a camp in Poland with his family. He sent mathematical work to Konrad Knopp at the University of Tübingen , where he received his doctorate under Knopp in 1944 ( some questions about limitation theory ).

After the war he was stateless for over ten years. He completed his habilitation in Tübingen and taught at the University of Frankfurt from 1946 to 1948 and as honorary professor in Tübingen in 1948/49. In 1949 he emigrated to Canada and became an assistant and then assistant professor at the University of Toronto . 1953 to 1958 he was a professor at Wayne State University and 1958 to 1969 at Syracuse University . From 1969 until his retirement in 1980 he was a professor at the University of Texas at Austin .

He dealt with analysis , especially approximation theory , interpolation theory of operators, functional analysis.

In 1972 he received an honorary doctorate in Tübingen and in 1996 in Würzburg . In 1973 he received the Humboldt Research Award .

He had been married since 1942 and had five children. He was a passionate chess player and traveled to chess tournaments, including the 1972 World Cup in Reykjavík.

Paul Butzer is one of his doctoral students . His son Rudolph Lorentz is a professor of mathematics at Texas A&M University .

Fonts

  • with Ronald DeVore Constructive approximation , Springer Verlag 1993
  • with Manfred von Golitschek , Yuli Makovoz : Constructive approximation: advanced problems , Springer Verlag 1996
  • Approximation of Functions , Holt, Rinehart and Winston 1966, New York: Chelsea, 2nd edition 1986
  • Bernstein Polynomials , University of Toronto Press 1953, Chelsea 1986
  • with K. Jetter, SD Riemenschneider Birkhoff Interpolation , Cambridge University Press 1984
  • Mathematics from Leningrad to Austin: George G. Lorentz 'selected works in real, functional, and numerical analysis , 2 volumes, Birkhäuser 1997 (editors George G. Lorentz, Rudolph Lorentz)

Web links

Individual evidence

  1. ↑ Actually Georg Rudolfowitsch Lorentz, but from 1946 he veiled his Russian origins in order not to be deported
  2. ^ He was sentenced to eight years in a labor camp in Tbilisi in 1937 on false accusations and died in the camp a year later
  3. ^ Mathematics Genealogy Project
personal data
SURNAME Lorentz, George
ALTERNATIVE NAMES Lorentz, George Gunter (full name)
BRIEF DESCRIPTION American mathematician
DATE OF BIRTH February 25, 1910
PLACE OF BIRTH St. Petersburg
DATE OF DEATH January 1, 2006
Place of death Chico