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He graduated from King's College, Cambridge, and in 1938, earned a doctorate degree from Princeton University. During World War II , Turing worked for the Government Code and Cypher School at Bletchley Park , Britain's codebreaking centre that produced Ultra intelligence.
- Overview
- Early life and career
- The Entscheidungsproblem
- The Church-Turing thesis
- Code breaker
Alan Turing (born June 23, 1912, London, England—died June 7, 1954, Wilmslow, Cheshire) British mathematician and logician who made major contributions to mathematics, cryptanalysis, logic, philosophy, and mathematical biology and also to the new areas later named computer science, cognitive science, artificial intelligence, and artificial life.
The son of a civil servant, Turing was educated at a top private school. He entered the University of Cambridge to study mathematics in 1931. After graduating in 1934, he was elected to a fellowship at King’s College (his college since 1931) in recognition of his research in probability theory. In 1936 Turing’s seminal paper “On Computable Numbers,...
What mathematicians called an “effective” method for solving a problem was simply one that could be carried by a human mathematical clerk working by rote. In Turing’s time, those rote-workers were in fact called “computers,” and human computers carried out some aspects of the work later done by electronic computers. The Entscheidungsproblem sought ...
An important step in Turing’s argument about the Entscheidungsproblem was the claim, now called the Church-Turing thesis, that everything humanly computable can also be computed by the universal Turing machine. The claim is important because it marks out the limits of human computation. Church in his work used instead the thesis that all human-computable functions are identical to what he called lambda-definable functions (functions on the positive integers whose values can be calculated by a process of repeated substitution). Turing showed in 1936 that Church’s thesis was equivalent to his own, by proving that every lambda-definable function is computable by the universal Turing machine and vice versa. In a review of Turing’s work, Church acknowledged the superiority of Turing’s formulation of the thesis over his own (which made no reference to computing machinery), saying that the concept of computability by a Turing machine “has the advantage of making the identification with effectiveness…evident immediately.”
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Having returned from the United States to his fellowship at King’s College in the summer of 1938, Turing went on to join the Government Code and Cypher School, and, at the outbreak of war with Germany in September 1939, he moved to the organization’s wartime headquarters at Bletchley Park, Buckinghamshire. A few weeks previously, the Polish governm...
Apr 2, 2014 · After Sherborne, Turing enrolled at King's College (University of Cambridge) in Cambridge, England, studying there from 1931 to 1934. As a result of his dissertation, in which he proved the...
Turing moved to the University of Manchester, where electronic engineers had already demonstrated a very small stored-program computer. Now he focused on the use of computers.
Turing matriculated at King’s College Cambridge in 1931 and graduated in 1934 with a distinguished degree in mathematics. A year later he was elected a fellow of Kings on the strength of a dissertation on ‘The Gaussian Error Function’.
Jun 7, 2011 · Alan was sent to school but did not seem to be obtaining any benefit so he was removed from the school after a few months. Next he was sent to Hazlehurst Preparatory School where he seemed to be an 'average to good' pupil in most subjects but was greatly taken up with following his own ideas.
He became an undergraduate at King's College, Cambridge University, in 1931, reading Mathematics and graduating with distinction in 1934. Very soon, in 1935, the lectures of M. H. A. (Max) Newman at Cambridge introduced him to the frontier of mathematical logic, which likewise had been transformed since 1900.
