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'', 'Henry V' and 'Gentzen's Analysis of First-Order Proofs'
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6 ideas
5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic
13831
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Logic is based on transitions between sentences [Prawitz]
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11211
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If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
11210
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Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt]
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13825
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Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]
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11212
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The sense of a connective comes from primitively obvious rules of inference [Rumfitt]
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5. Theory of Logic / H. Proof Systems / 4. Natural Deduction
13823
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In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]
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