Combining Texts

Ideas for 'Thinking About Mathematics', 'Frege philosophy of mathematics' and 'Reference and Generality (3rd ed)'

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2 ideas

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

9820	In classical logic, logical truths are valid formulas; in higher-order logics they are purely logical [Dummett]

5. Theory of Logic / D. Assumptions for Logic / 2. Excluded Middle

8729	Intuitionists deny excluded middle, because it is committed to transcendent truth or objects [Shapiro]