Combining Texts

All the ideas for 'Necessary Existents', 'Fragments' and 'New Foundations for Mathematical Logic'

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

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3 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

9879	NF has no models, but just blocks the comprehension axiom, to avoid contradictions [Quine, by Dummett]

19. Language / D. Propositions / 3. Concrete Propositions

19216

Propositions (such as 'that dog is barking') only exist if their items exist [Williamson]

25. Social Practice / E. Policies / 5. Education / d. Study of history

23873

Dividing history books into separate chapters is disastrous [Weil]