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The machine was still incomplete when he left. In he was appointed to a readership in the University of Manchester, where work was beginning on the construction of a computing machine by F.

Don Knuth ,1974 ACM Turing Award Recipient - Part 1

Williams and T. The expectation was that Turing would lead the mathematical side of the work, and for a few years he continued to work, first on the design of the subroutines out of which the larger programs for such a machine are built, and then, as this kind of work became standardized, on more general problems of numerical analysis. From onward he turned back for a while to mathematics and finally to his biological theory. But he remained in close contact with the Computing Machine Laboratory, whose members found him ready to tackle the mathematical problems that arose in their work, and what is more, to find the answers, by that combination of powerful mathematical analysis and intuitive shortcuts that showed him at heart more of an applied than a pure mathematician.

After the war, feeling in need of violent exercise, he took to long distance running, and found that he was very successful at it. He won the 3-mile and mile championships of his club the Walton Athletic Club , both in record time, and was placed fifth in the Amateur Athletic Association Marathon race in He thought it quite natural to put this accomplishment to practical use from time to time, for example, by running some 9 miles from Teddington to a technical conference at the Post Office Research Station in North London, when the public transport proved tedious.

In conversation he had a gift for comical but brilliantly apt analogies, which found its full scope in the discussions on "brains v. He delighted in confounding those who, as he thought, too easily assumed that the two things are separated by an impassable gulf, by challenging them to produce an examination paper that could be passed by a man, but not by a machine. They were both active in the Cambridge University Wireless Society, and were both keen radio hams.

Their later careers took different directions. Addie held a Royal Signals commission in the Territorial Army Volunteer Reserve, and was mobilized soon after the outbreak of the war on, September 3, He found himself, at the age of 23, in command of the Wireless Section of the 52nd Lowland Divisional Signals in France.

Later in the war, when attached to the "Y" service, Addie met Alan Turing:.

ISBN 13: 9780444884862

One of my wartime activities was to be involved in the planning, design, and construction of a large radio receiving station at Hanslope Park a few miles from Bletchley. It was known as a 'Y' station and was intended for the interception of enemy radio signals. The project was aimed at setting a new standard for intercept stations.

It was a green field exercise involving a new station building, and much of the equipment for it had to be specially designed and made. To this end, workshop and laboratory space was provided. The antenna system consisted of numbers of 3-wire rhombics spaced radially round the main building which housed banks of receivers fed from wide band amplifiers to whose inputs selected antennas could be connected. Dedicated land lines fed outgoing signals to Bletchley Park, which was only a few miles away, and to other places. The engineering section, with which I was associated, undertook all constructional and maintenance work in the technical field.

It was in , when the station was operational, that I was asked to provide facilities for Alan Turing so that he might pursue his ideas on speech encryption. Thus I came to know him well and appreciate his intellectual qualifies, which clearly dwarfed those of us who were trying to help him. I gave him room and assistants, and supplied him with chassis, components, power supplies, etc. My vivid memories are of a man of medium build with a round head of crewcut hair bending over what we used to describe as an "electrified bird's nest" of resistors, capacitors, and odd components insecurely fixed to a prototype chassis.

All components were held aloft by little blobs of solder, hence the "nest. I would watch fascinated as Turing plunged a hot soldering iron in the midst of this wonderwork. Needless to say, calamities happened; sparks flew, fuses blew, and things got hot, but Turing just pressed on in the sure knowledge of what he wished to achieve. Working on experimental gear with the power on was a common practice in those days, but not everybody was as reckless as Turing.

It had been arranged to find him digs locally, to and from which he rode an ancient bicycle. He seemed impervious to weather and, on more than one occasion, arrived soaked to the skin. On these occasions, he was coaxed into removing his trousers and given a lab coat in which he marched throughout the complex, regardless of his hairy legs and sock suspenders garters being on general view. He decided that our impregnating oven was the place to dry his garments, and on one occasion, with his mind on other weightier matters, he caused a minor fire.

The Alan Turing Year - Alan Turing: His Work and Impact

Clothes were then rationed in the UK, and we had to have a collection of ration coupons to help him buy a new pair of trousers. In the Mess, he was both lively and amusing, and would engage in all manner of discussions on all kinds of diverse topics. Turing was indeed a most dedicated man, totally oblivious of the wherewithal required for his own comfort.

He took it for granted that all would somehow be provided, and we did provide it as far as we could. The girls at Hanslope took him in hand, calling him "prof," which he seemed to like. He was pleasant to me, and I always kept close touch with the work he did, and showed that I was interested. He always took trouble to explain his thoughts, which I appreciated.

Unfortunately, I did not see the outcome of Turing's experiments, since I was posted to the Far East to help mastermind the communications for Mountbatten in India and beyond. I was particularly distressed at the manner of his death in , and the utter waste of a brilliant mind. Much has been made of the homosexuality of Alan Turing. The biography by Andrew Hodges was initially intended according to the publishers to be a celebration of his sexual preference, but they were able to convince Hodges that there was more to the story than just that aspect of his life.

Similarly, the play by Hugh Whitemore makes homosexuality the central theme, and a recent video play by the British Broadcasting Corporation, entitled "The Strange Life and Death of Dr. Turing," followed the same thread. In a set of interviews in with I. That was when he said that he was going to Paris to "see a boy. Michie: He certainly wasn't during the war, for some of us, including both of us, were quite unaware I took quite seriously his engagement to Lee: Peter Hilton [] quotes you, Jack, as saying, 'It was fortunate that the authorities did not know during the war that Turing was a homosexual, otherwise the Allies might have lost the war.

Michie: Oh but that's absolute nonsense, because Bletchley had some flamboyant homosexuals--Peter's ideas that security people were down on homosexuality itself, is absolute nonsense. I can't think how he could write that. The most flamboyant case was Angus Wilson--he later became a very successful novelist, and he had a boyfriend called Beverly, and these two, Angus was about that high [indicating small] with flowing yellow hair I remember it went white later and Beverly I forget his second name was very "weed-like," very tall.

They could be seen shambling along the horizon, a daily sight, as they took their walk around lawns after lunch. Good: I never knew that. I know that Angus Wilson ran around the pond in the nude, when he had a nervous breakdown. Michie: He was also said to have poured ink on his head on another occasion; it was the first sign he was going nuts again. What is maybe surprising about these papers is that although they were written decades ago, they address major issues which concern researchers today.

Most recent volume Mathematical Logic is a collection of the works of one of the leading figures in 20th-century science.

About This Item

This collection of A. Turing's works is intended to include all his mature scientific writing, including a substantial quantity of unpublished material. His work in pure mathematics and mathematical logic extended considerably further; the work of his last years, on morphogenesis in plants, is also of the greatest originality and of permanent importance.

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This book is divided into three parts. The first part focuses on computability and ordinal logics and covers Turing's work between and The second part covers type theory; it provides a general introduction to Turing's work on type theory and covers his published and unpublished works between and Finally, the third part focuses on enigmas, mysteries, and loose ends. This concluding section of the book discusses Turing's Treatise on the Enigma, with excerpts from the Enigma Paper.

It also delves into Turing's papers on programming and on minimum cost sequential analysis, featuring an excerpt from the unpublished manuscript. This book will be of interest to mathematicians, logicians, and computer scientists.

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