Full Idea
Ockham is the scholastic paradigm of anti-realism with respect to the categories.
Gist of Idea
Ockham was an anti-realist about the categories
Source
report of William of Ockham (Summula philosophiae naturalis [1320]) by Robert Pasnau - Metaphysical Themes 1274-1671 05.3
Book Reference
Pasnau,Robert: 'Metaphysical Themes 1274-1671' [OUP 2011], p.86
A Reaction
These are the ten categories mentioned in Aristotle's book 'Categories'.