Philosophy Lexicon of Arguments

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Geach, Peter T.
 
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Predicates I 110
Predicate/Geach: "predicables": spurious: E.g. "--- smoked a pipe" -"5 is dividable by 5 and by one", as well as for "3..." - predicate: real: "Russell smoked a pipe" - the identity of predicates with reflexive pronouns is not assured.
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I 216
Predicate/Geach: must never be confused with names - the term does not denote the object.
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I 224
Predicates/Geach: more common property of sentences - but not actual expression in the sentence.
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I 224
"Stand for"/Geach: there is no difference whether I say a predicate "stands for" a property or it is its name.
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I 224
Predicate/Geach: does not appear as an actual expression in the sentence. - Geach: there is no identity criterion for predicates. - One cannot know whether two predicates stand for the same property. - Equality of use is necessary condition for same reference. - ((s) That is, the extension but not the intension is equal!) - GeachVsQuine: therefore one should not identify properties with classes.
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I 239
Predicate/Terminology/Geach: I call predicates only like this if they are used as the principal functor in a proposition, otherwise "predicables". -
I-predicables/I-predicate/Geach: (s): those predicates in which regard the two objects are indistinguishable in a given theory - if distinctions can be made in an extended theory, then the l-predicate does not change its meaning - E.g. "uniform" for (different but not at all differentiated) tokens of words, later the tokens are distinguished, but are still "uniform".
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I 301
GeachVs two-name theory: error: that if two names denote the same thing, that they then allow the same predicates.
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I 301
Predicate/Geach: Predicates such as "become" can only be assigned to concrete terms.

Gea I
P.T. Geach
Logic Matters Oxford 1972


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Ed. Martin Schulz, access date 2017-03-23