J. A. Green
| Sandy Green | |
|---|---|
| Born |
26 February 1926 Rochester, New York, US |
| Died | 7 April 2014 (aged 88) |
| Residence | Oxford, England |
| Citizenship | Britain, United States |
| Fields | Mathematics |
| Institutions | Bletchley Park |
| Alma mater |
University of St Andrews St John's College, Cambridge |
| Doctoral advisor | Philip Hall, David Rees |
| Known for | Work on group representation theory |
| Notable awards | de Morgan Medal (2001) |
James Alexander "Sandy" Green FRS (26 February 1926 – 7 April 2014) was a mathematician and Professor at the Mathematics Institute at the University of Warwick, who worked in the field of representation theory.
Sandy Green was born in February 1926 in Rochester, New York, but moved to Toronto with his emigrant Scottish parents later that year. The family returned to Britain in May 1935 when his father, Frederick C. Green, took up the Drapers Professorship of French at the University of Cambridge.
Green was educated at the Perse School, Cambridge. He won a scholarship to the University of St Andrews and matriculated aged 16 in 1942. He took an ordinary BSc in 1944, and then, after scientific service in the war, was awarded a BSc Honours in 1947. He gained his PhD at St John's College, Cambridge in 1951, under the supervision of Philip Hall and David Rees.
In the summer of 1944, he was conscripted for national scientific service at the age of eighteen, and was he was assigned to work at Bletchley Park, where acted as a human "computer" carrying out calculations in Hut F, the "Newmanry", a department led by Max Newman which used special-purpose Colossus computers to assist in breaking German naval codes.
His first lecturing post (1950) was at the University of Manchester, where Newman was his Head of Department. In 1964 he became a Reader at the University of Sussex, and then in 1965 was appointed as a Professor at the newly formed Mathematics Institute at Warwick University, where he led the algebra group. He spent several periods as a visiting academic in the United States, beginning with a year at the Institute for Advanced Study in Princeton, New Jersey in 1960–61, as well as similar visits to universities in France, Germany and Portugal. After retiring from Warwick he became a member of the faculty and Professor Emeritus at the Mathematics Institute of the University of Oxford, in whose meetings he participated actively. His final publication was produced at the age of eighty.
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