Axel Thue


Axel Thue (Norwegian: [tʉː]; 19 February 1863 – 7 March 1922), was a Norwegian mathematician, known for his original work in diophantine approximation and combinatorics.

Axel Thue
Axel Thue.jpg
Axel Thue (1863-1922)
Born(1863-02-19)19 February 1863
Died7 March 1922(1922-03-07) (aged 59)
Alma materUniversity of Kristiania
Known forThue's theorem, Thue systems
Scientific career
InstitutionsUniversity of Kristiania
Trondheim Technical College
Thesis (1889)
Doctoral advisorElling Holst
Doctoral studentsThoralf Skolem


Thue published his first important paper in 1909.[1]

He stated in 1914 the so-called word problem for semigroups or Thue problem, closely related to the halting problem.[2]

His only known PhD student was Thoralf Skolem.

The esoteric programming language Thue is named after him.

See alsoEdit


  • Thue, A. (1909), "Über Annäherungswerte algebraischer Zahlen", Journal für die reine und angewandte Mathematik, 1909 (135): 284–305, doi:10.1515/crll.1909.135.284, ISSN 0075-4102, S2CID 125903243
  • Thue, A. (1977) [1912], "Über die gegenseitige Lage gleicher Teile gewisser Zeichenreihen", Selected Math. Papers of Axel Thue, Universiteitsforlaget: 67


  1. ^ O'Connor, John J.; Robertson, Edmund F., "Axel Thue", MacTutor History of Mathematics archive, University of St Andrews
  2. ^ Ronald V. Book and Friedrich Otto, String-rewriting Systems, Springer, 1993, ISBN 0-387-97965-4, p. 36.

External linksEdit