Mathematician:William Richard Maximilian Hugo Threlfall

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William Threlfall was a German mathematician whose main work was in topology.

Collaborated extensively with Karl Johannes Herbert Seifert.

Not to be confused with:


German (with an English father, which explains why his surname is English).


  • Born: June 25th 1888 in Dresden, Germany
  • Died: April 4 1949 in Oberwolfach, Germany

Theorems and Definitions


  • 1932: Gruppenbilder
  • 1934: Lehrbuch der Topologie (Lectures on Topology) (with Herbert Seifert)
  • 1938: Variationsrechnung Im Grossen (Variational Calculus in the Large) (with Herbert Seifert)