Robin Oliver Gandy (22 September 1919 – 20 November 1995) was a British mathematician and logician.[4] He was a friend, student, and associate of Alan Turing, having been supervised by Turing during his PhD at the University of Cambridge,[1] where they worked together.[5][6][7]
Educated at Abbotsholme School in Derbyshire, Gandy took two years of the Mathematical Tripos, at King's College, Cambridge, before enlisting for military service in 1940. During World War II he worked on radio intercept equipment at Hanslope Park, where Alan Turing was working on a speech encipherment project, and he became one of Turing's lifelong friends and associates. In 1946, he completed Part III of the Mathematical Tripos, then began studying for a PhD under Turing's supervision. He completed his thesis, On axiomatic systems in mathematics and theories in Physics, in 1952.[1] He was a member of the Cambridge Apostles.[10]
Gandy is known for his work in recursion theory. His contributions include the Spector–Gandy theorem, the Gandy Stage Comparison theorem, and the Gandy Selection theorem. He also made a significant contribution to the understanding of the Church–Turing thesis, and his generalisation of the Turing machine is called a Gandy machine.[11]
Gandy died in Oxford, England on 20 November 1995.[4][12]
The Robin Gandy Buildings, a pair of accommodation blocks at Wolfson College, Oxford, are named after Gandy.[13][14] A one-day centenary Gandy Colloquium was held on 22 February 2020 at the College in Gandy's honour, including contributions by some of his students;[15][16] the speakers were Marianna Antonutti Marfori (Munich), Andrew Hodges (Oxford), Martin Hyland (Cambridge), Jeff Paris (Manchester), Göran Sundholm (Leiden), Christine Tasson (Paris), and Philip Welch (Bristol).
