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Ideas for 'The Fixation of Belief', 'talk' and 'Reasoning and the Logic of Things'

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6. Mathematics / C. Sources of Mathematics / 10. Constructivism / a. Constructivism

9916	Convention, yes! Arbitrary, no! [Poincaré, by Putnam]

6. Mathematics / C. Sources of Mathematics / 10. Constructivism / c. Conceptualism

19226

We now know that mathematics only studies hypotheses, not facts [Peirce]