Combining Texts
Ideas for
'Truth and the Past', 'Replies on 'Limits of Abstraction'' and 'The Runabout Inference Ticket'
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8 ideas
5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence
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8195
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Undecidable statements result from quantifying over infinites, subjunctive conditionals, and the past tense [Dummett]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
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11021
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Prior rejected accounts of logical connectives by inference pattern, with 'tonk' his absurd example [Prior,AN, by Read]
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13836
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Maybe introducing or defining logical connectives by rules of inference leads to absurdity [Prior,AN, by Hacking]
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17896
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We need to know the meaning of 'and', prior to its role in reasoning [Prior,AN, by Belnap]
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17898
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Prior's 'tonk' is inconsistent, since it allows the non-conservative inference A |- B [Belnap on Prior,AN]
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5. Theory of Logic / G. Quantification / 5. Second-Order Quantification
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10569
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If you ask what F the second-order quantifier quantifies over, you treat it as first-order [Fine,K]
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5. Theory of Logic / I. Semantics of Logic / 1. Semantics of Logic
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10570
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Assigning an entity to each predicate in semantics is largely a technical convenience [Fine,K]
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5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / b. The Heap paradox ('Sorites')
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8194
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Surely there is no exact single grain that brings a heap into existence [Dummett]
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