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Ideas for 'fragments/reports', 'The Boundary Stones of Thought' and 'Principia Mathematica'

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6. Mathematics / B. Foundations for Mathematics / 1. Foundations for Mathematics

18846

Cantor and Dedekind aimed to give analysis a foundation in set theory (rather than geometry) [Rumfitt]

6. Mathematics / B. Foundations for Mathematics / 5. Definitions of Number / a. Defining numbers

18152

Russell takes numbers to be classes, but then reduces the classes to numerical quantifiers [Russell/Whitehead, by Bostock]