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Ideas for 'works', 'Logical Consequence' and 'Truth and Truthmakers'

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2 ideas

6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / a. Units

18392

Classes have cardinalities, so their members must all be treated as units [Armstrong]

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

18760

The culmination of Euclidean geometry was axioms that made all models isomorphic [McGee]