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Johannes Hjelmslev

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Johannes Trolle Hjelmslev (Danish: [ˈjelˀmsle̝w]; 7 April 1873 – 16 February 1950) was a mathematician from Hørning, Denmark. Hjelmslev worked in geometry and history of geometry. He was the discoverer and eponym of the Hjelmslev transformation, a method for mapping an entire hyperbolic plane into a circle with a finite radius. He was the father of Louis Hjelmslev.

Publications

  • Johannes Hjelmslev, Grundprinciper for den infinitesimale Descriptivgeometri med Anvendelse paa Læren om variable Figurer. Afhandling for den philosophiske Doctorgrad, 1897
  • Johannes Hjelmslev, Deskriptivgeometri: Grundlag for Forelæsninger paa Polyteknisk Læreanstalt, Jul. Gjellerup 1904
  • Johannes Hjelmslev, Geometriske Eksperimenter, Jul. Gjellerup 1913
  • Johannes Hjelmslev, Darstellende Geometrie, Teubner 1914
  • Johannes Hjelmslev, Geometrische Experimente, Teubner 1915
  • Johannes Hjelmslev, Lærebog i Geometri til Brug ved den Polytekniske Læreanstalt, Jul. Gjellerup 1918
  • Johannes Hjelmslev, Die natürliche Geometrie- vier Vorträge, Hamburger Mathematische Einzelschriften 1923
  • Johannes Hjelmslev, Om et af den danske matematiker Georg Mohr udgivet skrift Euclides Danicus', udkommet i Amsterdam i 1672", Matematisk Tidsskrift B, 1928, pp 1-7
  • Johannes Hjelmslev, Grundlagen der projektiven Geometrie, 1929
  • Johannes Hjelmslev, Beiträge zur Lebensbeschreibung von Georg Mohr, Det Kongelige Danske Videnskabernes Selskab, Math.-Fys. Meddelelser, Bd.11, 1931, Nr.4
  • Johannes Hjelmslev, Grundlag for den projektive Geometri, Gyldendal 1943

See also

References

  • Salmonsens Konversationsleksikon, [1]
  • Salmonsens Konversationsleksikon, [2]