Hans-Heinrich Ostmann

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Autumn 1949 in Oberwolfach (2nd from left)

Hans-Heinrich Ostmann (born October 16, 1913 in Beuthen ; † November 4, 1959 in Berlin ) was a German mathematician who dealt with additive number theory.

Life

Ostmann was the son of a mine operator in Silesia and went to grammar school in Bytom. From 1932 he studied mathematics, physics and chemistry at the Humboldt University in Berlin , in Munich and from 1935 at the University of Breslau , where he received his doctorate in 1938 under Georg Feigl (and Johann Radon as co-supervisor) (On the density of the sum of two sets of numbers). The subject, the hypothesis, was posed by himself (it was proven by Henry Mann in 1942 ). After receiving his doctorate, after teaching at a technical college in 1940, he became a research assistant in Breslau, where he completed his habilitation in 1942. In 1945 he fled to the West and lived in Oberwolfach , where he made his way as a milk tester and private expert for lay mathematicians ( circle squarers and the like). At the same time he was writing a review article on additive number theory. In the same year he became a deputy professor and in 1950 a lecturer in Marburg, but in the same year he moved to the Free University of Berlin as an associate professor , where his reputation from Marburg as an excellent teacher was confirmed. In 1959 he died of an undiagnosed skin disease ( lupus erythematosus ).

In 1956 he summarized the knowledge of additive number theory at the time in a comprehensive report published by Springer Verlag.

He was married twice. A daughter born in 1960 comes from the second marriage in 1958.

Fonts

  • Additive number theory I, II, Springer, Results of Mathematics and its Frontier Areas 1956, in two parts
  • with H. Liermann: Number Theory, in Behnke, Fladt, Süss (editor) Grundzüge der Mathematik, 1958

literature

Web links

References

  1. ↑ published in Deutsche Mathematik, Vol. 5, 1940, p. 177
  2. ↑ State building school for civil engineering
personal data
SURNAME Ostmann, Hans-Heinrich
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH October 16, 1913
PLACE OF BIRTH Bytom
DATE OF DEATH 4th November 1959
Place of death Berlin