Klaus Roth
British mathematician (1925–2015) / From Wikipedia, the free encyclopedia
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Klaus Friedrich Roth FRS (29 October 1925 – 10 November 2015) was a German-born British mathematician who won the Fields Medal for proving Roth's theorem on the Diophantine approximation of algebraic numbers. He was also a winner of the De Morgan Medal and the Sylvester Medal, and a Fellow of the Royal Society.
Klaus Roth | |
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Born | Klaus Friedrich Roth (1925-10-29)29 October 1925 |
Died | 10 November 2015(2015-11-10) (aged 90) Inverness, Scotland |
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Scientific career | |
Fields | Mathematics |
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Thesis | Proof that almost all Positive Integers are Sums of a Square, a Positive Cube and a Fourth Power (1950) |
Doctoral advisor | Theodor Estermann |
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Roth moved to England as a child in 1933 to escape the Nazis, and was educated at the University of Cambridge and University College London, finishing his doctorate in 1950. He taught at University College London until 1966, when he took a chair at Imperial College London. He retired in 1988.
Beyond his work on Diophantine approximation, Roth made major contributions to the theory of progression-free sets in arithmetic combinatorics and to the theory of irregularities of distribution. He was also known for his research on sums of powers, on the large sieve, on the Heilbronn triangle problem, and on square packing in a square. He was a coauthor of the book Sequences on integer sequences.