Ioan Mackenzie James FRS (born 23 May 1928) is a British

mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems.
Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change.
History
...

working in the field of topology
In mathematics, topology (from the Greek words , and ) is concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling, and bending; that is, without closing ...

, particularly in homotopy theory
In mathematics, homotopy theory is a systematic study of situations in which maps can come with homotopies between them. It originated as a topic in algebraic topology but nowadays is studied as an independent discipline. Besides algebraic topolog ...

.
Biography

James was born inCroydon
Croydon is a large town in south London, England, south of Charing Cross. Part of the London Borough of Croydon, a local government district of Greater London. It is one of the largest commercial districts in Greater London, with an extensive ...

, Surrey
Surrey () is a ceremonial and non-metropolitan county in South East England, bordering Greater London to the south west. Surrey has a large rural area, and several significant urban areas which form part of the Greater London Built-up Area. ...

, England, and was educated at St Paul's School, London
(''By Faith and By Learning'')
, established =
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, type = Independent school Public school
, religion = Church of England
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and Queen's College, Oxford
The Queen's College is a constituent college of the University of Oxford, England. The college was founded in 1341 by Robert de Eglesfield in honour of Philippa of Hainault. It is distinguished by its predominantly neoclassical architecture, ...

. In 1953 he earned a D. Phil. from the University of Oxford
, mottoeng = The Lord is my light
, established =
, endowment = £6.1 billion (including colleges) (2019)
, budget = £2.145 billion (2019–20)
, chancellor ...

for his thesis entitled ''Some problems in algebraic topology'', written under the direction of J. H. C. Whitehead.
In 1957 he was appointed reader in pure mathematics, a post which he held until 1969. From 1959 until 1969 he was a senior research fellow at St John's College. He held the Savilian Chair of Geometry at the University of Oxford from 1970 to 1995. He is now a professor emeritus
''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...

.
He was elected a Fellow of the Royal Society
Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural knowledge, including mathematic ...

in 1968. In 1978 the London Mathematical Society
The London Mathematical Society (LMS) is one of the United Kingdom's learned societies for mathematics (the others being the Royal Statistical Society (RSS), the Institute of Mathematics and its Applications (IMA), the Edinburgh Mathematical ...

awarded him the Senior Whitehead Prize
The Senior Whitehead Prize of the London Mathematical Society (LMS) is now awarded in odd numbered years in memory of John Henry Constantine Whitehead, president of the LMS between 1953 and 1955. The Prize is awarded to mathematicians normally r ...

, which was established in honour of his doctoral supervisor, Whitehead. In 1984 he became President of the London Mathematical Society
The London Mathematical Society (LMS) is one of the United Kingdom's learned societies for mathematics (the others being the Royal Statistical Society (RSS), the Institute of Mathematics and its Applications (IMA), the Edinburgh Mathematical ...

.
He married Rosemary Stewart, a writer and researcher in business management and healthcare management, in 1961. She died in 2015, aged 90.
Books

*, ''Topologies and Uniformities'' (Springer Undergraduate Mathematics Series), Springer, 1999. *, ''Remarkable Mathematicians, From Euler to von Neumann'', Cambridge University Press, 2002. *, ''Remarkable Physicists: From Galileo to Yukawa'', Cambridge University Press, 2004. *, '' Asperger's Syndrome And High Achievement: Some Very Remarkable People'', Jessica Kingsley Pub, 2005. *, ''The Mind of the Mathematician'', JHU Press, 2007. *, ''Driven to Innovate: A Century of Jewish Mathematicians and Physicists'', Peter Lang Oxford, 2009. *, ''Remarkable Biologists: From Ray to Hamilton'', Cambridge University Press, 2009. *, ''Remarkable Engineers: From Riquet to Shannon'', Cambridge University Press, 2010.See also

* James embedding * James reduced productReferences

External links

* * 1928 births Living people English mathematicians Fellows of New College, Oxford Fellows of St John's College, Oxford Fellows of the Royal Society British historians of mathematics Historians of science Savilian Professors of Geometry Place of birth missing (living people) Topologists {{UK-mathematician-stub