Axel Thue
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Wikipedia : http://en.wikipedia.org/wiki/Axel_ThueAxel Thue  

Axel Thue (18631922)
 
Born 

19 February 1863
Died  7 March 1922 
(aged 59)
Residence  Norway 
Nationality  Norwegian 
Alma mater  University of Kristiania 
Known for  Thue's theorem, Thue systems 
Scientific career  
Fields  Mathematician 
Institutions 
University of Kristiania Trondheim Technical College 
Thesis  (1889) 
Doctoral advisor  Elling Holst 
Doctoral students  Thoralf Skolem 
Axel Thue (Norwegian: [tʉː]; 19 February 1863 – 7 March 1922), was a Norwegian mathematician, known for highly original work in diophantine approximation, and combinatorics.
Work
Thue published his first important paper in 1909.^{[1]}
He stated in 1914 the socalled 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 also
 SemiThue system
 Thue–Morse sequence
 Thue–Siegel–Roth theorem
 Thue equation
 Thue programming language
 Thue's theorem
 Word problem
Publications
 Thue, A. (1909), "Über Annäherungswerte algebraischer Zahlen", Journal für die reine und angewandte Mathematik, 135: 284–305, doi:10.1515/crll.1909.135.284, ISSN 00754102
 Thue, A. (1977) [1912], "Über die gegenseitige Lage gleicher Teile gewisser Zeichenreihen", Selected Math. Papers of Axel Thue, Universiteitsforlaget: 67
References
 ^ O'Connor, John J.; Robertson, Edmund F., "Axel Thue", MacTutor History of Mathematics archive, University of St Andrews.
 ^ Ronald V. Book and Friedrich Otto, Stringrewriting Systems, Springer, 1993, ISBN 0387979654, p. 36.
External links
 Axel Thue at the Mathematics Genealogy Project
 Axel Thue private archive exists at NTNU University Library Dorabiblioteket
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