Philosophy Lexicon of Arguments

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Predicates, philosophy, logic: predicates are symbols that can stand in logical formulas for properties. In fact, not every predicate stands for a property, since it has contradictory predicates, but no contradictory properties. For example, one can think of a predicate "squaround" for "square and round", that is, two properties that exclude each other. One can then truthfully say "Nothing is squaround". There are therefore more predicates than properties. See also round square, scheme characters, quantification, 2nd level logic, predication, attributes, adjectives.
 
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Schw I 121
Predicate/Lewis/Schwarz: singles out properties - which ones depends on possible worlds.
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Schw I 228
Names/Predicate/Property/Lewis: Thesis: names can name anything: instead of predicate "F" we take "F-ness" predicates are not names and designate nothing - predicate/(s): Not singular terms.
SchwarzVsLewis/RussellVsFrege: assuming that each predicate can be assigned a name for a corresponding property, Russell’s paradox follows -> heterology: no property corresponds to some predicates such as E.g. -is a property that does not apply to itself - Also, nothing that can be named with a singular term corresponds to predicates such as E.g. "is a class" E.g. -is part of- and E.g. -"identical with". - ((s) predicates can always be invented, whether the world contains adequate properties is an empirical question.) - ((s) properties belong to ontology - predicates: belong to ideology (alluding to Quine?)).

LW I
D. Lewis
Die Identität von Körper und Geist Frankfurt 1989

LW II
D. Lewis
Konventionen Berlin 1975

LW IV
D. Lewis
Philosophical Papers Bd I New York Oxford 1983

LW V
D. Lewis
Philosophical Papers Bd II New York Oxford 1986

LwCl I
Cl. I. Lewis
Mind and the World Order: Outline of a Theory of Knowledge (Dover Books on Western Philosophy) 1991


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Ed. Martin Schulz, access date 2017-05-29