Peter Tennant Johnstone (born 1948) is Professor of the
Foundations of Mathematics at the
University of Cambridge
, mottoeng = Literal: From here, light and sacred draughts.
Non literal: From this place, we gain enlightenment and precious knowledge.
, established =
, other_name = The Chancellor, Masters and Schola ...
, and a fellow of
St. John's College.
He invented or developed a broad range of fundamental ideas in
topos theory. His thesis, completed at the University of Cambridge in 1974, was entitled "Some Aspects of
Internal Category Theory in an
Elementary Topos
In mathematics, a topos (, ; plural topoi or , or toposes) is a category that behaves like the category of sheaves of sets on a topological space (or more generally: on a site). Topoi behave much like the category of sets and possess a notion ...
".
He is a great-great nephew of the Reverend
George Gilfillan who was eulogised in
William McGonagall's first poem.
Books
*.
:— "
r too hard to read, and not for the faint-hearted"
[An anonymous referee, as quoted by Johnstone in his ''Sketches of an elephant'', p. ix.]
*.
*.
* (v.3 in preparation)
References
External links
Johnstone's web page*
*
{{DEFAULTSORT:Johnstone, Peter
Category theorists
Living people
Cambridge mathematicians
Fellows of St John's College, Cambridge
1948 births