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'Analyzing Modality', 'fragments/reports' and 'Reason, Truth and History'
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5 ideas
5. Theory of Logic / E. Structures of Logic / 1. Logical Form
21400
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Stoics avoided universals by paraphrasing 'Man is...' as 'If something is a man, then it is...' [Stoic school, by Long]
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5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not
20788
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The contradictory of a contradictory is an affirmation [Stoic school, by Diog. Laertius]
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5. Theory of Logic / G. Quantification / 3. Objectual Quantification
11115
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'All horses' either picks out the horses, or the things which are horses [Jubien]
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5. Theory of Logic / I. Semantics of Logic / 6. Intensionalism
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
14207
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If cats equal cherries, model theory allows reinterpretation of the whole language preserving truth [Putnam]
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