Combining Philosophers
Ideas for H.Putnam/P.Oppenheim, Bob Hale and Harold Noonan
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7 ideas
5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic
19296
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If second-order variables range over sets, those are just objects; properties and relations aren't sets [Hale]
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5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention
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Maybe conventionalism applies to meaning, but not to the truth of propositions expressed [Hale]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / d. Singular terms
10316
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We should decide whether singular terms are genuine by their usage [Hale]
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10312
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Often the same singular term does not ensure reliable inference [Hale]
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10313
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Plenty of clear examples have singular terms with no ontological commitment [Hale]
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10322
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If singular terms can't be language-neutral, then we face a relativity about their objects [Hale]
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5. Theory of Logic / H. Proof Systems / 4. Natural Deduction
19298
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Unlike axiom proofs, natural deduction proofs needn't focus on logical truths and theorems [Hale]
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