Frank Ramsey (mathematician)

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Frank Ramsey
Ramsey, c. 1921
Born	Frank Plumpton Ramsey (1903-02-22)22 February 1903 Cambridge, Cambridgeshire, England
Died	19 January 1930(1930-01-19) (aged 26) Southwark, London, England
Education	Trinity College, Cambridge (BA, 1923)
Spouse	Lettice Ramsey ​ (m. 1925)​
Children	2
Era	20th-century philosophy
Region	Western philosophy
School	Analytic philosophy
Institutions	King's College, Cambridge
Main interests	Combinatorics Philosophy of mathematics Logic Metaphysics Epistemology
Notable ideas	Theory of simple types Redundancy theory of truth Ramsey sentences Ramsey–Lewis method Ramsey theory Ramsey problem Ramsey–Dvoretzky–Milman phenomenon Ramsey test Ramsey's theorem Ramsey–Cass–Koopmans model Keynes–Ramsey rule Bernays–Schönfinkel–Ramsey class

Frank Plumpton Ramsey (/ˈræmzi/; 22 February 1903 – 19 January 1930) was a British philosopher, mathematician, and economist who made major contributions to all three fields before his death at the age of 26. He was a close friend of Ludwig Wittgenstein and, as an undergraduate, translated Wittgenstein's Tractatus Logico-Philosophicus into English. He was also influential in persuading Wittgenstein to return to philosophy and Cambridge. Like Wittgenstein, he was a member of the Cambridge Apostles, the secret intellectual society, from 1921.