Turings Enigma notebook containing codebreakers calculations set - TopicsExpress

Turings Enigma notebook containing codebreakers calculations set to fetch £650,000 at auction. The notebook 56 pages of handwritten workings from Alan Turing It dates from 1942 when he worked at Bletchley Park to break Nazi code A Turing scholar said the notebook shines extra light on Turings mind. notebook revealing Alan Turings mind-boggling calculations as he battled to crack the Enigma code during the Second World War is expected to fetch £600,000 at auction. The book - which has never been seen in public before - dates from 1942 when he was working at Bletchley Park to break the Nazi code. It contains 56 pages of handwritten workings and provides a remarkable insight into the thought process of a genius. In the pad, bought in Cambridge, Mr Turing writes about how extremely difficult it is to understand the Leibniz notation. He wrote: The Leibniz notation I find extremely difficult to understand in spite of it having been the one I understood the best once! It certainly implies that some relation between x and y has been laid down eg, y=x2+3x? The colourful covered notebook is made up of complicated mathematical workings and is split into three parts - with the first two sections consisting of Mr Turings maths notes. The third part belongs to Robin Gandy, a friend and fellow mathematician, who was handed the notebook by Mr Turing. Mr Gandy, who donated most of Mr Turings papers to the archive at Kings College, Cambridge, kept the notebook and wrote deeply personal dream sequences in it at the request of his psychiatrist. is expected to fetch a staggering £620,000. A portion of the proceeds will go to charity. Andrew Hodges, a leading Turing scholar, said: Alan Turing was parsimonious with his words and everything from his pen has special value. This notebook shines extra light on how, even when he was enmeshed in great world events, he remained committed to free-thinking work in pure mathematics. Mr Turing is regarded by many as one of Britain...

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