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Department of Pure Mathematics and Mathematical Statistics

Professor of Foundations of Mathematics

Research Interests: Category theory, in particular topos theory and connections with logic

Publications

What do Freyd’s Toposes Classify?
P Johnstone
– Logica Universalis
(2013)
7,
335
THE GLEASON COVER OF A REALIZABILITY TOPOS
P Johnstone
– THEORY AND APPLICATIONS OF CATEGORIES
(2013)
28,
1139
GEOMETRIC MORPHISMS OF REALIZABILITY TOPOSES
P Johnstone
– THEORY AND APPLICATIONS OF CATEGORIES
(2013)
28,
241
Calibrated Toposes
P Johnstone
– Bulletin of the Belgian Mathematical Society: Simon Stevin
(2012)
19,
889
Foreword [Special issue: Dedicated to the memory of Professor Gregory Maxwell Kelly]
M Hyland, G Janelidze, M Johnson, P Johnstone, S Lack, R Street, W Tholen, R Wood
– Applied Categorical Structures. A Journal Devoted to Applications of Categorical Methods in Algebra, Analysis, Order, Topology and Computer Science
(2011)
19,
1
Remarks on punctual local connectedness
P Johnstone
– Theory and Applications of Categories
(2011)
25,
No. 3
Realizability: an introduction to its categorical side [book review of MR2479466]
PT Johnstone
– Bulletin of Symbolic Logic
(2010)
16,
407
De Morgan's law and the theory of fields
O Caramello, P Johnstone
– Advances in Mathematics
(2009)
222,
2145
FIXPOINT OBJECTS NEED NOT BE Omega-DISCRETE
P Johnstone
– GEORGIAN MATH J
(2009)
16,
75
On embedding categories in groupoids
PT Johnstone
– Mathematical Proceedings of the Cambridge Philosophical Society
(2008)
145,
273
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Room

C1.07

Telephone

01223 337985