Person: Johnson (5), Barry
Barry Johnson was an English mathematician who worked on operator algebras.
Mathematical Profile (Excerpt):
 Johnson studied mathematics as his main subject but he was also extremely successful in his subsidiary subjects of physics and chemistry, winning a prize from the Royal Australian Chemical Institute.
 Johnson's contribution to these, as well as his penetrating and challenging (but never aggressive) questioning of views expressed in lectures left no doubt among his teachers that we were contributing in a modest way to the training of a mathematical giant.
 In order to undertake research in pure mathematics Johnson returned to England but he first taught at a grammar school in Tamworth before he began research in functional analysis at Gonville and Caius College of the University of Cambridge in October 1958.
 Johnson completed his doctorate in 1961 with a thesis Centralisers in topological algebras.
 Johnson spent the year 197071 as a visiting professor at Yale University.
 This was during a year in which Johnson was visiting professor at the University of California at Los Angelos, at Santa Barbara, and at Berkeley.
 In 1978 Johnson was honoured by being elected a fellow of the Royal Society of London.
 Johnson served the London Mathematical Society as a member of the Council during 197578, then as the 60th president of the Society in 198082.
 Johnson was a governor of the Royal Grammar School in Newcastle from 1987.
 Johnson is well known for his work on Banach algebras and operator algebras, in particular, studying cohomology in these algebras.
 In 1972 Johnson wrote a joint paper with Ringrose and Kadison on cohomology of operator algebras and in the same year his book Cohomology in Banach algebras (1972) appeared.
 We mentioned above that Johnson was President of the London Mathematical Society during 198082.
 Barry also liked listening to music and doing his own repairs and alterations to their house and their cottage on the Scottish borders.
Born 1 August 1937, Woolwich, London, England. Died 5 May 2002, Newcastle upon Tyne, England.
View full biography at MacTutor
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Origin England
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 @JJO'Connor
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References
Adapted from other CC BYSA 4.0 Sources:
 Oâ€™Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive