- Louis Mordell
Louis Joel Mordell (
28 January 1888- 12 March 1972) was a British mathematician, known for pioneering research in number theory. He was born in Philadelphia, USA, in a Jewish family of Lithuanian extraction. He came in 1906 to Cambridge to take the scholarship examination for entrance to St John's College, and was successful in gaining a place and support.
Having taken third place in the
Mathematical Tripos, he began independent research into particular diophantine equations: the question of integer points on the cubic curve, and special case of what is now called a Thue equation, the Mordell equation
:"y"2 = "x"3 + "k".
He took an appointment at Birkbeck College, London in 1913. During
World War Ihe was involved in war work, but also produced one of his major results, proving in 1917 the multiplicative property of Ramanujan's tau-function. The proof was by means, in effect, of the Hecke operators, which had not yet been christened for Erich Hecke; it was, in retrospect, one of the major advances in modular formtheory, beyond its status as an odd corner of the theory of special functions.
In 1920 he took a teaching position in Manchester College of Technology, becoming the Fielden Reader in Pure Mathematics at the
Victoria University of Manchesterin 1922 and Professor in 1923. There he developed a third area of interest within number theory, geometry of numbers. His basic work on Mordell's theoremis from 1921/2, as is the formulation of the Mordell conjecture.
He took British citizenship in 1929. In Manchester he also built up the department, offering posts to a number of outstanding mathematicians who had been forced from posts on the continent of Europe. He brought in
Reinhold Baer, G. Billing, Paul Erdős, Chao Ko, Kurt Mahler, and Beniamino Segre. He also recruited J. A. Todd, P. Du Val, Harold Davenport, L. C. Young, and invited distinguished visitors.
In 1945 he returned to Cambridge, and the Sadleirian Chair, as Head of Department, and officially retired in 1953. It was at this time that he had his only formal research students, of whom
J. W. S. Casselswas one. His idea of supervising research was said to involve the suggestion that a proof of the transcendence of the Euler-Mascheroni constantwas probably worth a doctorate. His book "Diophantine Equations" (1969) is based on lectures, and gives an idea of his discursive style.
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Louis Mordell — in Nizza, 1970 Louis Joel Mordell (* 28. Januar 1888 in Philadelphia, USA; † 12. März 1972 in Cambridge, England) war ein amerikanisch britischer Mathematiker, der vor allem in der Zahlentheorie, speziell der … Deutsch Wikipedia
Louis Mordell — Louis Joel Mordell est un mathématicien américano britannique, né le 28 janvier 1888 à Philadelphie et mort le 12 mars 1972 à Cambridge. Pionnier par ses recherches en théorie des nombres, il est un spécialiste reconnu des équations… … Wikipédia en Français
Louis Joel Mordell — Louis Mordell in Nizza, 1970 Louis Joel Mordell (* 28. Januar 1888 in Philadelphia, USA; † 12. März 1972 in Cambridge, England) war ein amerikanisch britischer Mathematiker, der vor allem in der Zahlentheorie, spezi … Deutsch Wikipedia
Mordell — Louis Mordell in Nizza, 1970 Louis Joel Mordell (* 28. Januar 1888 in Philadelphia, USA; † 12. März 1972 in Cambridge, England) war ein amerikanisch britischer Mathematiker, der vor allem in der Zahlentheorie, spezi … Deutsch Wikipedia
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