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Partial identity / Armstrong: non-mereologically: complex property and rel. can be in whole-part-rel or be overlapping, but not mereologically - e.g. the property to have 5 kg weight: then the particular is among other things, composed of several non-overlapping parts, each of which has a 3 kg and the other 2 kg mass - here universls seem correct - a case of partial identity.
AR II = Disp
D. M. Armstrong
Dispositions, Tim Crane, London New York 1996
What is a Law of Nature? Cambridge 1983