The mathematics of nature at the Alan Turing centenary
S. Barry Cooper, Philip K. Maini · Interface Focus · 2012
Alan Turing inhabited a very individual world between the abstract and the concrete—see Mrs Turing's sketch of her son playing hockey in 1923 ([figure 1][1]). His 1936 universal Turing machine detached computation from the actuality of its physical host, and established a powerful computational