Combining Texts
Ideas for
'Intro to Naming,Necessity and Natural Kinds', 'Necessary Beings' and 'Logic [1897]'
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5 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
19289
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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 / b. Names as descriptive
5829
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We refer to Thales successfully by name, even if all descriptions of him are false [Schwartz,SP]
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5830
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The traditional theory of names says some of the descriptions must be correct [Schwartz,SP]
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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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