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'Parmenides', 'Frege on Knowing the Foundations' 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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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives
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Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz]
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5. Theory of Logic / H. Proof Systems / 4. Natural Deduction
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In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz]
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5. Theory of Logic / K. Features of Logics / 1. Axiomatisation
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We come to believe mathematical propositions via their grounding in the structure [Burge]
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5. Theory of Logic / L. Paradox / 3. Antinomies
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Plato found antinomies in ideas, Kant in space and time, and Bradley in relations [Plato, by Ryle]
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Plato's 'Parmenides' is perhaps the best collection of antinomies ever made [Russell on Plato]
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