Combining Philosophers
Ideas for Lynch,MP/Glasgow,JM, Stephen S. Colvin and Hilary Putnam
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10 ideas
5. Theory of Logic / A. Overview of Logic / 2. History of Logic
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18954
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Before the late 19th century logic was trivialised by not dealing with relations [Putnam]
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5. Theory of Logic / A. Overview of Logic / 5. First-Order Logic
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18956
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Asserting first-order validity implicitly involves second-order reference to classes [Putnam]
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5. Theory of Logic / C. Ontology of Logic / 1. Ontology of Logic
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18962
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Unfashionably, I think logic has an empirical foundation [Putnam]
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5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism
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10066
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Putnam coined the term 'if-thenism' [Putnam, by Musgrave]
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5. Theory of Logic / E. Structures of Logic / 5. Functions in Logic
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18961
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We can identify functions with certain sets - or identify sets with certain functions [Putnam]
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5. Theory of Logic / F. Referring in Logic / 1. Naming / a. Names
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17505
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Using proper names properly doesn't involve necessary and sufficient conditions [Putnam]
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5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth
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18955
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Having a valid form doesn't ensure truth, as it may be meaningless [Putnam]
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5. Theory of Logic / I. Semantics of Logic / 6. Intensionalism
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14203
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Intension is not meaning, as 'cube' and 'square-faced polyhedron' are intensionally the same [Putnam]
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5. Theory of Logic / J. Model Theory in Logic / 2. Isomorphisms
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14207
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If cats equal cherries, model theory allows reinterpretation of the whole language preserving truth [Putnam]
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5. Theory of Logic / J. Model Theory in Logic / 3. Löwenheim-Skolem Theorems
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9913
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The Löwenheim-Skolem Theorem is close to an antinomy in philosophy of language [Putnam]
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