- Louis Mordell
**Louis Joel Mordell**(28 January 1888 -12 March 1972 ) was a British mathematician, known for pioneering research innumber theory . He was born inPhiladelphia ,USA , in aJew ish family ofLithuania n 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 particulardiophantine equation s: the question ofinteger point s on thecubic curve , and special case of what is now called aThue equation , theMordell equation :"y"

^{2}= "x"^{3}+ "k".He took an appointment at Birkbeck College, London in 1913. During

World War I he was involved in war work, but also produced one of his major results, proving in 1917 the multiplicative property ofRamanujan 'stau-function . The proof was by means, in effect, of theHecke operator s, which had not yet been christened forErich Hecke ; it was, in retrospect, one of the major advances inmodular form theory, beyond its status as an odd corner of the theory ofspecial function s.In 1920 he took a teaching position in Manchester College of Technology, becoming the Fielden Reader in Pure Mathematics at the

Victoria University of Manchester in 1922 and Professor in 1923. There he developed a third area of interest within number theory,geometry of numbers . His basic work onMordell's theorem is from 1921/2, as is the formulation of theMordell 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 , andBeniamino Segre . He also recruitedJ. 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. Cassels was one. His idea of supervising research was said to involve the suggestion that a proof of the transcendence of theEuler-Mascheroni constant was probably worth a doctorate. His book "Diophantine Equations" (1969) is based on lectures, and gives an idea of his discursive style.**ee also***

Chowla-Mordell theorem

*Mordell–Weil theorem **External links***

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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**Louis J. Mordell**— Louis Mordell Louis Mordell in Nizza, 1970. Born 28 January 1888( … Wikipedia**Mordell-Vermutung**— Die Vermutung von Mordell entstammt der Zahlentheorie, wurde im Jahr 1922 von Louis Mordell aufgestellt und 1983 von Gerd Faltings in seinem Artikel Endlichkeitssätze für abelsche Varietäten über Zahlkörpern[1] (Faltings Satz) bewiesen.… … Deutsch Wikipedia**Mordell curve**— y2 = x3 + 1, with solutions at ( 1, 0), (0, 1) and (0, 1) In algebra, a Mordell curve is an elliptic curve of the form y2 = x3 + n, where n is an integer and where n ≠ 0 … Wikipedia**Mordell–Weil theorem**— In mathematics, the Mordell–Weil theorem states that for an abelian variety A over a number field K, the group A(K) of K rational points of A is a finitely generated abelian group, called the Mordell Weil group. The case with A an elliptic curve… … Wikipedia**MORDELL, PHINEHAS**— (1861–1934), Hebrew grammarian and scholar. Mordell was born in Shat (Kovno province) and studied in Yelizavetgrad. In 1881, he went to the U.S. and settled in Philadelphia. During his first years there Mordell worked at various trades and was a… … Encyclopedia of Judaism**MORDELL, LOUIS JOEL**— (1888–1972), British mathematician. Mordell was professor of mathematics at Manchester from 1923 to 1945 and professor at Cambridge from 1945. He was elected a Fellow of the Royal Society in 1924, and president of the London Mathematical Society… … Encyclopedia of Judaism