Ulrich Graf (mathematician)

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Ulrich (Paul Albert) Graf (born February 6, 1908 in Wolgast ; † September 11, 1954 in Düsseldorf ) was a German mathematician . He was one of the pioneers of modern mathematical and technical statistics in Germany after the Second World War .

Life

Ulrich Graf was the son of the Wolgast factory owner Albert Graf (1866–1937) and his wife Helene, née Laffert (* 1878), a teacher. From 1926 he studied mathematics, physics and philosophy at the Technical University and at the University of Berlin . There were Georg Hamel , Georg Scheffers , R. Rothe and Karl Metzner his teachers. In 1931 he became a qualified engineer and passed the 1st state examination for higher teaching qualifications in mathematics and physics. He received his doctorate in engineering in 1932 and passed the second state examination the following year. He then worked as an assistant to Erich Salkowski at the TH Berlin, where he received his habilitation in 1934 .

In 1938 he went to the TH Danzig as an associate professor , became a full professor the following year and was director of the Institute for Geometry and Geodesy until the end of World War II . In Danzig he published numerous texts on geometry, photogrammetry , anaglyphs and cartography as well as several textbooks.

As a result of the war, he lost his family and property in Gdansk in 1945 and had to leave the city. In the next few years he worked for the Royal Navy , taught at the Christian Albrechts University in Kiel and then worked for the French Navy .

With a teaching assignment from the Technical Academy in Wuppertal on large number research, mathematical statistics became his main field of activity from 1949. He published, partly in collaboration with HJ Hennings, around 20 papers and several books on modern statistical methods. He founded the Committee for Technical Statistics, advocated closer cooperation with industry and represented Germany in Paris at the OEEC . He taught at the Otto-Friedrich-Universität Bamberg until 1952 and was then commissioned by the Association of German Ironworkers, today's VDEh Steel Institute , in Düsseldorf to deal with and continue statistical questions. In 1953 he was appointed honorary professor at the University of Münster .

family

Ulrich Graf married Maria-Erika Seeger (1914–1945) in Berlin-Lankwitz in 1938, the daughter of the architect and professor at the TH Berlin, Hermann Seeger. His wife and their two daughters died in 1945. In his second marriage, he married the merchant's daughter Christiane Krohn (* 1924) in Immenstaad in 1949, with whom he also had two daughters.

Fonts (selection)

  • Descriptive geometry . 1937 (12th edition with Martin Barner , Friedrich Flohr , Quelle and Meyer 1991)
  • Trigonometry of the plane, spherical geometry and map designs . 1938
  • Cabaret of Mathematics . 1942
  • Statistical procedures for textile investigations . 1952
  • Formulas and tables of mathematical statistics . 1953

literature

Web links

personal data
SURNAME Graf, Ulrich
ALTERNATIVE NAMES Count, Ulrich Paul Albert
BRIEF DESCRIPTION German mathematician
DATE OF BIRTH February 6, 1908
PLACE OF BIRTH Wolgast
DATE OF DEATH September 11, 1954
Place of death Dusseldorf