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Ideas for 'Summa totius logicae', 'Regressive Method for Premises in Mathematics' and 'Pacidius Philalethi dialogue'

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3 ideas

6. Mathematics / B. Foundations for Mathematics / 2. Proof in Mathematics

17627

It seems absurd to prove 2+2=4, where the conclusion is more certain than premises [Russell]

6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / a. Mathematical empiricism

17628

Arithmetic was probably inferred from relationships between physical objects [Russell]

6. Mathematics / C. Sources of Mathematics / 5. Numbers as Adjectival

9113	Just as unity is not a property of a single thing, so numbers are not properties of many things [William of Ockham]