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  from the library of the father of computer science and Artificial Intelligence: Alan Turing

  [TURING, Alan].

  The World at War 1939-1944: A Brief History of World War II. Materials for the Use of Army Orientation Program.

  Washington: The Infantry Journal, 1945.

  The father of computer science, Alan Turing's copy of the U.S. War Department Military Intelligence Division's official history of World War II. Small octavo, original wrappers as issued. From the library of Alan Turing with his ownership signature to the title page, "A.M. Turing." English mathematician, computer scientist, and cryptanalyst Alan Mathison Turing was highly influential in the development of theoretical computer science, providing a formalization of the concepts of algorithm and computation with the Turing machine, a model of the general-purpose computer. During the Second World War, Turing was a leading participant in the breaking of German ciphers at Bletchley Park. As a part-time worker with the Government Code and Cypher School (GC&CS), he concentrated on cryptanalysis of the 'Enigma' cipher machine used by Nazi Germany. By using statistical techniques to optimize the trial of different possibilities in the code breaking process, Turing made an innovative contribution to WWII cryptanalysis. He wrote two papers discussing mathematical approaches, The Applications of Probability to Cryptography and Paper on Statistics of Repetitions which were of such value to GC&CS and its successor GCHQ that they were not released to the UK National Archives until April ...

  Price: $20,000.00     Item Number: 135225

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