56-page book contains Turing 's thoughts on tricky 'Andrew Hodges notation dx/dy ' It was written at the Bletchley Park code-breaking headquarters in 1942 . Only extensive Turing manuscript thought to exist , the auctioneer said . It will be sold by an anonymous seller by Bonhams in New York on Monday .
56-page book contains Turing 's thoughts on tricky 'Leibniz notation dx/dy ' It was written at the Bletchley Park code-breaking headquarters in 1942 . Only extensive Turing manuscript thought to exist , the auctioneer said . It will be sold by an anonymous seller by Bonhams in New York on Monday .