Remarkable People

Alan Turing's notebook sells for $1.025 million

Alan Turing's notebook sells f...
Evidence indicate that Turing wrote the manuscript at Bletchley Park no earlier than 1942, when he was working on cracking the famous German Enigma code
Evidence indicate that Turing wrote the manuscript at Bletchley Park no earlier than 1942, when he was working on cracking the famous German Enigma code
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Cover of the Turing manscript
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Cover of the Turing manscript
"Dots are used as brackets, as in my paper. The more dots, the more powerful."
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"Dots are used as brackets, as in my paper. The more dots, the more powerful."
Turing's notes on Giuseppe Peano's axioms of natural numbers
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Turing's notes on Giuseppe Peano's axioms of natural numbers
Evidence indicate that Turing wrote the manuscript at Bletchley Park no earlier than 1942, when he was working on cracking the famous German Enigma code
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Evidence indicate that Turing wrote the manuscript at Bletchley Park no earlier than 1942, when he was working on cracking the famous German Enigma code
"The Leibniz notation dy/dx 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 ...."
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"The Leibniz notation dy/dx 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 ...."
"I am inclined to the view that this is too subtle and makes an inconvenient definition. I prefer the indeterminate k be just the variable."
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"I am inclined to the view that this is too subtle and makes an inconvenient definition. I prefer the indeterminate k be just the variable."
"It seems a suitable disguise to write in between these notes of Alan's on notation; but possibly a little sinister; a dead father figure, some of his thoughts which I most completely inherited."
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"It seems a suitable disguise to write in between these notes of Alan's on notation; but possibly a little sinister; a dead father figure, some of his thoughts which I most completely inherited."
Alan Turing (1912-1954) wrote the manuscript during the Second World War after 1942
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Alan Turing (1912-1954) wrote the manuscript during the Second World War after 1942

A remarkable scientific document went under the hammer today at Bonhams in New York. The rare handwritten manuscript by Alan Turing in which he made notes on symbolic logic and mathematics during the Second World War for sold for US$1,025,000.

Evidence, such as references to previously published works, indicates that Turing wrote the manuscript at Bletchley Park no earlier than 1942, when he was working on cracking the famous German Enigma code, which provided the Allies with vital information credited with helping shorten the war.

The unassuming 56-page composition book was previously withheld from sales of memorabilia related to the mathematician because the blank pages in the middle section were used by the British mathematician and logician Robin Oliver Gandy (1919-1995) to keep a personal dream journal. The notebook was part of a collection of papers that were bequeathed to Gandy after Turing's death in 1954.

The notebook was originally bought from a Cambridge stationer's shop and is the only extensive autograph manuscript by Turing to survive.

Alan Turing (1912-1954) wrote the manuscript during the Second World War after 1942
Alan Turing (1912-1954) wrote the manuscript during the Second World War after 1942

The subject of the manuscript is Turing's thoughts on symbolic logic and mathematics, based on his discussions with the philosopher Ludwig Wittgenstein 1939.

"This is a wonderful result and a fitting testament to Alan Turing's impact and legacy," said Cassandra Hatton, Senior Specialist in Fine Books and Manuscripts and the History of Science at Bonhams. "It has been a great privilege to have been involved in this sale and we are immensely pleased that all the people who bid for this unique item and indeed the wider public have recognized Turing's importance and place in history."

The auction was part of Bonhams Fine Books & Manuscripts Sale, with part of the proceeds going to charity.

Source: Bonhams

A remarkable scientific document went under the hammer today at Bonhams in New York. The rare handwritten manuscript by Alan Turing in which he made notes on symbolic logic and mathematics during the Second World War for sold for US$1,025,000.

Evidence, such as references to previously published works, indicates that Turing wrote the manuscript at Bletchley Park no earlier than 1942, when he was working on cracking the famous German Enigma code, which provided the Allies with vital information credited with helping shorten the war.

The unassuming 56-page composition book was previously withheld from sales of memorabilia related to the mathematician because the blank pages in the middle section were used by the British mathematician and logician Robin Oliver Gandy (1919-1995) to keep a personal dream journal. The notebook was part of a collection of papers that were bequeathed to Gandy after Turing's death in 1954.

The notebook was originally bought from a Cambridge stationer's shop and is the only extensive autograph manuscript by Turing to survive.

Alan Turing (1912-1954) wrote the manuscript during the Second World War after 1942
Alan Turing (1912-1954) wrote the manuscript during the Second World War after 1942

The subject of the manuscript is Turing's thoughts on symbolic logic and mathematics, based on his discussions with the philosopher Ludwig Wittgenstein 1939.

"This is a wonderful result and a fitting testament to Alan Turing's impact and legacy," said Cassandra Hatton, Senior Specialist in Fine Books and Manuscripts and the History of Science at Bonhams. "It has been a great privilege to have been involved in this sale and we are immensely pleased that all the people who bid for this unique item and indeed the wider public have recognized Turing's importance and place in history."

The auction was part of Bonhams Fine Books & Manuscripts Sale, with part of the proceeds going to charity.

Source: Bonhams

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