![]() ![]() On September 27, 1940, Japan signed the Tripartite Pact with Germany and Italy, thus entering the military alliance known as the " Axis." Seeking to curb Japanese aggression and force a withdrawal of Japanese forces from Manchuria and China, the United States imposed economic sanctions on Japan. If you have any queries please contact Sabrina Downey, Events Director, at or call +44 (0)20 7747 2622.Japanese expansion in East Asia began in 1931 with the invasion of Manchuria and continued in 1937 with a brutal attack on China. To attend this event, please register online using the "Book your place" button above. An optional £10 sandwich lunch shall be available from 1215. He was appointed a Member of the Order of Australia in 2006 for services to mathematics education, an area in which he remains involved. Following retirement in 1997, he has conducted research on the breaking of Japanese codes during the Second World War, leading to a book which is soon to be published. He spent most of his career in the Department of Pure Mathematics at the University of Sydney, before becoming Chair of the University's Academic Board from 1991 to 1997. He has played a major role in mathematics education for all school levels in New South Wales, Australia, generally and internationally. Professor John Mack AM PhD MA (Cantab) BSc has been an Honorary Associate Professor in the School of Mathematics and Statistics at the University of Sydney since 1997. In his lecture, Professor Mack will describe the invaluable preparatory work done on this code in 1939-1941 and show how flaws in its design and operational use enabled it to be broken. It also gave warning of the Japanese intention to capture Port Moresby in Papua New Guinea via the overland route (the Kokoda Track campaign). The breaking of JN-25 proved enormously challenging, but ultimately enabled engagements such as the Battle of the Coral Sea, the Battle of Midway and the shooting down of Admiral Yamamoto’s aircraft by US fighters. In 1944, it was estimated that the inability of the Allies to read JN-25 was depriving them of an astonishing sixty percent of all useful intelligence in the Pacific. During the War in the Pacific, the Japanese Imperial Navy relied upon one main operational code, the JN-25 series. ![]() ![]() A lecture by Professor John Mack AM PhD MA (Cantab) BSc, Honorary Associate Professor in the School of Mathematics and Statistics, University of Sydney, Australia. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |