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Ideas for 'Mahaprajnaparamitashastra', 'The Evolution of Logic' and 'Structuralism Reconsidered'

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6. Mathematics / B. Foundations for Mathematics / 3. Axioms for Geometry

13474

Euclid has a unique parallel, spherical geometry has none, and saddle geometry has several [Hart,WD]

6. Mathematics / B. Foundations for Mathematics / 7. Mathematical Structuralism / e. Structuralism critique

8926	For mathematical objects to be positions, positions themselves must exist first [MacBride]