Combining Philosophers
Ideas for Chuang Tzu, Thomas W. Polger and Michal Walicki
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6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry
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In non-Euclidean geometry, all Euclidean theorems are valid that avoid the fifth postulate [Walicki]
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6. Mathematics / B. Foundations for Mathematics / 4. Axioms for Number / f. Mathematical induction
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Inductive proof depends on the choice of the ordering [Walicki]
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