Combining Texts

All the ideas for 'works (all lost)', 'From Stimulus to Science' and 'Notice of Fine's 'Limits of Abstraction''

expand these ideas     |    start again     |     specify just one area for these texts

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2 ideas

2. Reason / B. Laws of Thought / 3. Non-Contradiction

6564	To affirm 'p and not-p' is to have mislearned 'and' or 'not' [Quine]

18. Thought / E. Abstraction / 7. Abstracta by Equivalence

9141	Abstraction theories build mathematics out of second-order equivalence principles [Cook/Ebert]