Combining Texts
Ideas for
'Thinking About Mathematics', 'Contingent Identity' and 'Beginning Logic'
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2 ideas
5. Theory of Logic / B. Logical Consequence / 8. Material Implication
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The paradoxes of material implication are P |- Q → P, and ¬P |- P → Q [Lemmon]
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5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle
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Intuitionists deny excluded middle, because it is committed to transcendent truth or objects [Shapiro]
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