{"id":1695,"date":"2012-04-20T13:30:47","date_gmt":"2012-04-20T12:30:47","guid":{"rendered":"http:\/\/blogs.scienceforums.net\/ajb\/?p=1695"},"modified":"2012-04-20T13:30:47","modified_gmt":"2012-04-20T12:30:47","slug":"gchq-release-turing-papers","status":"publish","type":"post","link":"http:\/\/blogs.scienceforums.net\/ajb\/2012\/04\/20\/gchq-release-turing-papers\/","title":{"rendered":"GCHQ release Turing papers"},"content":{"rendered":"<table border=\"0\">\n<tbody>\n<tr>\n<td><img decoding=\"async\" src=\"http:\/\/www.mathcomp.leeds.ac.uk\/turing2012\/Images\/ATY.logo5.jpg\" alt=\"\" width=\"250\" \/><\/td>\n<td style=\"vertical-align: top\">\n<p>In order to mark the centenary of Alan Turing\u2019s birth, two of his mathematical research papers, believed to have been written whilst he was at Bletchley Park during World War II, have been released by GCHQ to The National Archives.  <\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Due to the sensative nature of the work done at GCHQ, the papers were not released earlier.\n<\/p>\n<blockquote><p>\nWe are delighted to release these papers showing more of Alan Turing\u2019s pioneering research during his time at Bletchley Park.  It was this type of research that helped turn the tide of war and it is particularly pleasing that we are able to share these papers during this centenary year.<\/p><\/blockquote>\n<p>GCHQ spokesperson<\/p>\n<p>The two papers are called \u201cPaper on Statistics of Repetitions\u2019 and \u2018The Applications of Probability to Crypt\u2019. <\/p>\n<p><strong>Paper on Statistics of Repetitions<\/strong><\/p>\n<p>In this paper Turing writes an informal report in which he works out the best statistical method of testing whether two cipher messages use the same key in parts of the message.<\/p>\n<p><strong>The Applications of Probability to Crypt<\/strong><\/p>\n<p>In this second paper, Turing applies rigorous probability analysis to coding problems of the day. One highlight is where Turing uses life expectancy to examine conditional probability.  The associated example, \u201cHitler is now age 52\u201d, adds piquancy and suggests that the paper was written between April 1941 and April 1942.  <\/p>\n<p><strong>Links<\/strong><\/p>\n<p><a href=\"http:\/\/www.gchq.gov.uk\/Press\/Pages\/turing-papers-released.aspx\" title=\"GCHQ Press Release\" target=\"_blank\">GCHQ Press Release<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In order to mark the centenary of Alan Turing\u2019s birth, two of his mathematical research papers, believed to have been written whilst he was at Bletchley Park during World War II, have been released by GCHQ to The National Archives. Due to the sensative nature of the work done at GCHQ, the papers were not &hellip; <a href=\"http:\/\/blogs.scienceforums.net\/ajb\/2012\/04\/20\/gchq-release-turing-papers\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">GCHQ release Turing papers<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6],"tags":[],"class_list":["post-1695","post","type-post","status-publish","format-standard","hentry","category-general","category-general-mathematics"],"_links":{"self":[{"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/posts\/1695","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/comments?post=1695"}],"version-history":[{"count":0,"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/posts\/1695\/revisions"}],"wp:attachment":[{"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/media?parent=1695"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/categories?post=1695"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blogs.scienceforums.net\/ajb\/wp-json\/wp\/v2\/tags?post=1695"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}