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Frank Plumpton Ramsey ( February 22, 1903 - January 19, 1930) was a British mathematician and logician.

Ramsey was born in Cambridge where his father was President of Magdalene College. He was educated at Winchester College before returning to Cambridge to study mathematics at Trinity College.

He graduated as a Wrangler (the Cambridge term for one who obtains the first-class score on the final examination in mathematics).

Ramsey's intelligence was remarkable, and impressed many academics at Cambridge. He was well-read in a wide array of fields, having an interest in almost anything. In politics, he had left-wing leanings; and in religion he was, according to his wife, "a militant atheistAtheist" redirects here. For the music group, see Atheist (band). Atheism is the condition of lacking theistic belief. Etymology The term atheism (French atheisme from athee meaning atheist, from Greek atheos, meaning godless : a-, without; + , theos, mea". In one of his conversations with C. K. Ogden, he expressed his desire to learn GermanGerman (called Deutsch in German in which germanisch refers to prechristian times), is a member of the western group of Germanic languages and one of the world's major languages. It is the language with the most native speakers in the European Union.. Ogden gave him a grammar, a dictionary, and an abstruse psychological treatise and told him: "Use the grammar and use the dictionary and come and tell us what you think." About a week later, Ramsey had not only learnt the language, but had also come up with objections to the theory advanced in the book. He later used his acquisition to read Ludwig WittgensteinLogic and the philosophy of language, critically examining the task of conventional philosophy and its relation to the nature of language. Ludwig Wittgenstein ( April 26, 1889 April 29, 1951) was an Austrian-born philosopher who contributed several ground's Tractatus Logico-PhilosophicusTractatus Logico-Philosophicus is the only book-length work published by the philosopher Ludwig Wittgenstein in his lifetime. Originally published in German in 1921 as Logisch-Philosophische Abhandlung when its author was just 32, it is now widely conside. This impressed him deeply, and in 1923Centuries: 19th century 20th century 21st century Decades: 1870s 1880s 1890s 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s Years: 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 Events January 1 Grouping of all UK railway companies into four larg he travelled to AustriaAustria is a landlocked country in Central Europe, a federation of nine states. Austria is bordered by Germany and the Czech Republic to the north, Slovakia and Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the to discuss it with Wittgenstein, who was then working as a teacher in a small village.

Back in EnglandEngland is the largest, the most populous, and the most densely populated of the four " Home Nations" which make up the United Kingdom of Great Britain and Northern Ireland (UK). Occupying the south-eastern portion of the island of Great Britain, England, in 1924 he became a fellow of King's College at the young age of 21. He produced a prodigious amount of work in the areas of the logic, mathematics, economics and the philosophy of those three disciplines. Unfortunately suffering from chronic liver problems, he contracted jaundice after an abdominal operation and died at the age of 26, ending a highly promising career too early.

One of the theorems proved by Ramsey in his 1930 paper On a problem of formal logic, which sparked the growth in this field, now bears his name (see Ramsey theory and Ramsey's theorem). It was an important early result in combinatorics, supporting the idea that within some sufficiently large systems, however disordered, there must be some order.

His immortal contribution to economic theory was the elegant concept of Ramsey pricing . This is applicable in situations where a (regulated) monopolist wants to maximise consumer surplus whilst at the same time ensuring that its costs are adequately covered. This is achieved by setting the price such that the markup over marginal cost is inversely proportional to the price elasticity of demand for that good. See A contribution to the theory of taxation (Economic Journal March 1927) and A mathematical theory of saving.

Ramsey was a good friend of economist John Maynard Keynes whose work on probability stimulated Ramsey to develop arguments for subjective probability ( Bayesian probability). As with the similar development by Bruno de Finetti the work only became well known in the 1950s.

His philosophical works included Universals (1925), Facts and propositions (1927), Universals of law and of fact (1928), Knowledge (1929), Theories (1929), and General propositions and causality (1929).

Frank Ramsey's younger brother, Arthur Michael Ramsey, was Archbishop of Canterbury from 1961 to 1974.





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