Alexander Dinghas

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Alexander Dinghas (born February 9, 1908 in Smyrna (Izmir), † April 19, 1974 in Berlin ) was a Greek-born German mathematician.

Dinghas 1967 in Erlangen

Live and act

Dinghas was the son of an elementary school teacher and went to high school in Athens , where the family moved from Smyrna in 1922. From 1925 he studied mechanical engineering and electrical engineering in Athens (diploma 1930) and from 1931 mathematics, physics and philosophy in Berlin at the Friedrich-Wilhelms-Universität , where he received his doctorate in 1936 under Erhard Schmidt ("Contributions to the theory of meromorphic functions"). In 1939 he completed his habilitation there. Since he was not a German citizen, his career in Berlin was initially hindered. In 1947 he became a full professor at the Humboldt University and in 1949 at the Free University of Berlin , temporarily as director of the mathematical institute. In 1951 he also became an honorary professor at the TH Berlin . He was visiting professor at Fordham University in New York and Columbia University (1953).

Dinghas mainly dealt with function theory ( Nevanlinna theory , growth of subharmonic functions). But he also dealt with differential equations and differential geometry (like his teacher Schmidt, he worked on the isoperimetric problem in spaces of constant curvature).

From 1931 until the divorce in 1949 he was married to the pianist Fanny Grafiadou. 1962 to 1966 and 1969 to 1971 he was chairman of the Berlin Mathematical Society. He was a corresponding member of the Heidelberg Academy of Sciences , member of the Finnish (1973) and the Norwegian Academies of Sciences (1957).

Alexander Dinghas died in Berlin in 1974 at the age of 66. His grave is in the Dahlem forest cemetery .

Fonts

  • Lectures on function theory, Springer 1961
  • Minkovskian sums and integrals. Superadditive set functionals. Isoperimetric inequalities (1961)
  • Introduction to the Cauchy-Weierstrass theory of functions, BI, 1968
  • On the differential geometry of the classical fundamental domains, Springer 1974

literature

Web links

Individual evidence

  1. ^ Hans-Jürgen Mende: Lexicon of Berlin burial places . Pharus-Plan, Berlin 2018, ISBN 978-3-86514-206-1 , p. 579.
personal data
SURNAME Dinghas, Alexander
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH February 9, 1908
PLACE OF BIRTH Smyrna (Izmir)
DATE OF DEATH April 19, 1974
Place of death Berlin