Johannes Hjelmslev

Johannes Trolle Hjelmslev (7 April 1873 – 16 February 1950) was a mathematician from Copenhagen, 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, Darstellende Geometrie, Teubner 1914
• Johannes Hjelmslev, Geometrische Experimente, Teubner 1915
• 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

See also

• Hjelmslev's theorem

References

• Johannes Hjelmslev at the Mathematics Genealogy Project.
• Gottwald, Ilgauds, Schlote Lexikon bedeutender Mathematiker, Leipzig 1990

External links

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