Combining Texts

Ideas for 'fragments/reports', 'Regressive Method for Premises in Mathematics' and 'Does Emp.Knowledge have Foundation?'

expand these ideas     |    start again     |     choose another area for these texts

display all the ideas for this combination of texts

---

2 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]