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Frank I 357
Definition property/Lewis: the set of exactly those possible beings, actual or non-actual, that do or do not have a specified property - E.g. properties that segments of a street do or do not have.
Lewis IV X
Properties/Lewis: These are the appropriate objects of attitudes.
Properties/Lewis: Sets of individuals - "something that segments of things (in time or space) simply have - also extrinsic properties (that things have because of their relation to other things) - in general: the property to live on one world from any set of possible worlds corresponds to these possible worlds - i.e. for each proposition there is a property to live in a world where this proposition is true.
Ad IV 146
Proposition/Property/Lewis/(s): Proposition: not related to people, without spatiotemporal localization - simply true in possible world - E.g. Someone is happy - not possible to wish for me, because I do not know if I’m the one - in contrast, property: related to person - I am happy.
Schwarz I 94
Properties/Quantity theory/Lewis: no properties: being no cat, identity, element-ship > heterology.
Schw I 97
Disjunctive property/Lewis/Schwarz: 1) Any property is equivalent with a disjunction of two properties - disjunctive property: only if even more unnatural than the members: E.g. round is not disjunctive, as it clearly is not more unnatural than round and not red - E.g. round and lonely or not round and not lonely in contrast, are disjunctive, because it is less natural than round and lonely.
Schwarz I 97
Properties/Lewis/Schwarz: Definition intrinsic property: never differ between perfect duplicates -. Duplicate: Defined not by sum, but by distribution of the perfectly natural property - perf.nat.p. (PNP) = fundamental property: all qualitative intrinsic differences between things (also possible worlds) are based on their instantiation - E.g. Fred is the tallest in his family, but his duplicate is not in his family - that depends on distribution of intrinsic properties: if we duplicate the entire family, the duplicate is sure to be the tallest there as well.
Schwarz I 101
Class/Quantity/Properties/Lewis: things with E.g. same charge have to be more common than if they were an element of the same class.