Tietze

Heinrich Franz Friedrich Tietze

Born: 31 Aug 1880 in Schleinz, Austria
Died: 17 Feb 1964 in Munich, Germany

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Heinrich Tietze was a student at the Technische Hochschule in Vienna. There he formed a close friendship with three other students of mathematics, Paul Ehrenfest, Hans Hahn and Herglotz. They were known as the 'inseparable four'.

Tietze worked in the area of topology and developed important work on subdivisions of cell complexes. His work led him to consider group presentations and he proposed his now famous Tietze transformations to change from one presentation to another without changing the group which is defined.

Tietze also wrote on map colouring and wrote a well known book Famous Problems of Mathematics.

References:

  1. Dictionary of Scientific Biography
  2. O Perron, Heinrich Tietze 31.8.1880- 17.2.1964, Jahresberichte der Deutschen Mathematiker vereinigung 83 (1981), 182-185. 
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JOC/EFR February 1996