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'fragments/reports', 'Introducing the Philosophy of Mathematics' and 'A Theory of Conditionals'
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
6023
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Every proposition is either true or false [Chrysippus, by Cicero]
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8709
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The law of excluded middle is syntactic; it just says A or not-A, not whether they are true or false [Friend]
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