Person James; Ioan Mackenzie (1928-2025); mathematician James Ioan Mackenzie mathematician 1928-2025 British Male Croydon, Surrey, England, United Kingdom 23 May 1928 19280523 Oxford, England, United Kingdom 21 February 2025 20250221

Mathematician Algebraic topology Geometry Topology Mathematics Education: St Paul's School, London; Queen's College, University of Oxford Career: He was warded the Commonwealth Fund Fellowship and went to the United States to spend time at Princeton University, the University of California at Berkeley and the Institute for Advanced Study at Princeton (1954-1955); Tapp Research Fellow at Gonville and Caius College, Cambridge (1956); appointed Reader in Pure Mathematics, University of Oxford (1957-1969); Senior Research Fellow, St John's College (1959-1969); Savilian Professor of Geometry, Mathematical Institute, University of Oxford (1970-1995); Emeritus Savilian Professor of Geometry, Mathematical (1995) Institute,University of Oxford Awards/Medals: Berwick Prize 1959 Senior Whitehead Prize 1978 Memberships: London Mathematical Society Spouse: (m. 1961) Rosemary Stewart (d. 2015), writer and researcher in business management and healthcare management. Ioan James made distinguished contributions to algebraic topology, especially the theory of homotopy groups of spheres and Lie groups. Royal Society roles: Council: 1981-1982 Fellow 21/03/1968 39 The Royal Society Fellows Directory, Professor Ioan James FRS, [URL: https://royalsociety.org/people/ioan-james-11695/; last accessed: 10/09/2025] MT MacTutor, Ioan Mackenzie James, [URL: https://mathshistory.st-andrews.ac.uk/Biographies/James/; last accessed: 10/09/2025] St John's College, News, Professor Ioan James FRS, 25 February 2025,[URL: https://www.sjc.ox.ac.uk/discover/news/professor-ioan-james-frs/; last accessed: 10/09/2025] International Standard Archival Authority Record for Corporate Bodies, Persons and Families - ISAAR(CPF) - Ottawa 1996 ISBN 0-9696035-3-3 National Council on Archives, Rules for the Construction of Personal, Place and Corporate Names, 1997 https://royalsocietypublishing.org/action/doSearch?ContribAuthorRaw=James%2C+Ioan+Mackenzie RCN 12527 RCN 12528 RCN 12526 RCN 12529 RCN 10205 23 May 1928 - The past Fellows entries are under continuous revision. If you have queries or additional information to contribute, please contact Library@royalsociety.org. Content in external sources is not controlled by the Royal Society and historical sources may include content that is now unacceptable. Reviewed on 10/09/2025 as part of the Name Authority Project update. NA4190 21/11/2001 Andyg Pmab 10/09/2025 RS_NET\VidaM Yes 84be323d-81dd-471e-b027-7c19259fb69a