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'works', 'Philosophical Logic: Intro to Advanced Topics' and 'fragments/reports'
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5 ideas
5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
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In modern logic all formal validity can be characterised syntactically [Engelbretsen/Sayward]
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5. Theory of Logic / A. Overview of Logic / 6. Classical Logic
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Classical logic rests on truth and models, where constructivist logic rests on defence and refutation [Engelbretsen/Sayward]
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5. Theory of Logic / D. Assumptions for Logic / 4. Identity in Logic
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Unlike most other signs, = cannot be eliminated [Engelbretsen/Sayward]
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5. Theory of Logic / E. Structures of Logic / 1. Logical Form
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For Aristotle, the subject-predicate structure of Greek reflected a substance-accident structure of reality [Aristotle, by O'Grady]
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5. Theory of Logic / K. Features of Logics / 5. Incompleteness
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Axioms are ω-incomplete if the instances are all derivable, but the universal quantification isn't [Engelbretsen/Sayward]
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