Trygve Nagell (1895 to 1988), who was born Trygve Nagel and later adopted the spelling Nagell, was a Norwegian mathematician known for his work on Diophantine equations in number theory. He was born on July 13, 1895, in Kristiania, now Oslo, received his doctorate at the University of Oslo in 1926 under Axel Thue, and lectured there until 1931. From 1931 to 1962 he was a professor at Uppsala University in Sweden, where his doctoral students included Harald Bergstrom, and he died in Uppsala on January 24, 1988. He proved a conjecture of Srinivasa Ramanujan that only five numbers, 0, 1, 3, 15 and 4095, are both triangular numbers and Mersenne numbers, and the equation behind it is called the Ramanujan-Nagell equation.
Facts
Connections
In Branch
Source Trygve Nagell (Wikipedia)
Mentored By
Source Trygve Nagell (Wikipedia)
Principal Result
Source Trygve Nagell (Wikipedia)
Proofs Credited
Source Nagell-Lutz Theorem (Wikipedia)
In the Other Atlases
Nationality
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Source Trygve Nagell (Wikipedia)Lead, nationalityQuote, Lead, nationality
was a Norwegian mathematician
Sources
1. Trygve Nagell (Wikipedia)
Lead
(13 July 1895-24 January 1988)
Lead, pronoun
He was born in Oslo and died in Uppsala.
Lead, nationality
was a Norwegian mathematician
In Branch: Number Theory, Lead, field
known for his works on Diophantine equations in number theory
Principal Result: Ramanujan-Nagell Theorem, Contributions
Nagell proved a conjecture of Srinivasa Ramanujan that there are only five numbers that are both triangular numbers and Mersenne numbers
Mentored By: Axel Thue, Education and career
where his advisor was Axel Thue
View the SourceNagell-Lutz Theorem (Wikipedia)
Proofs Credited: Nagell-Lutz Theorem, Lead sentenceQuote, Proofs Credited: Nagell-Lutz Theorem, Lead sentence
It is named for Trygve Nagell and Élisabeth Lutz.
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