| Axel Thue | |
| Birth Date: | 19 February 1863 |
| Birth Place: | Tønsberg, Norway |
| Death Place: | Oslo, Norway |
| Field: | Mathematician |
| Work Institution: | University of Kristiania Trondheim Technical College |
| Alma Mater: | University of Kristiania |
| Thesis1 Title: | and |
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| Thesis1 Url: | and |
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| Thesis Year: | 1889 |
| Doctoral Advisor: | Elling Holst |
| Doctoral Students: | Thoralf Skolem |
| Known For: | Thue's theorems, Thue systems |
Axel Thue (in Norwegian tʉː/; 19 February 1863 – 7 March 1922) was a Norwegian mathematician, known for his original work in diophantine approximation and combinatorics.
Thue published his first important paper in 1909.
He stated in 1914 the so-called word problem for semigroups or Thue problem, closely related to the halting problem.[1]
His only known PhD student was Thoralf Skolem.
The esoteric programming language Thue is named after him.