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Full Idea
Four adequacy conditions for particulars and properties: asymmetry of instantiation; different particulars can have the same property; particulars can have many properties; two properties can be instantiated by the same particulars.
Gist of Idea
There are four conditions defining the relations between particulars and properties
Source
Alex Oliver (The Metaphysics of Properties [1996], §09)
Book Ref
-: 'Mind' [-], p.20
A Reaction
The distinction between particulars and universals has been challenged (e.g. by Ramsey and MacBride). There are difficulties in the notion of 'instantiation', and in the notion of two properties being 'the same'.