Combining Texts

All the ideas for 'Leibniz: Guide for the Perplexed', 'A Note on the entscheidungsproblem' and 'Necessary Existents'

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

---

3 ideas

5. Theory of Logic / K. Features of Logics / 7. Decidability

18758

Validity is provable, but invalidity isn't, because the model is infinite [Church, by McGee]

9. Objects / B. Unity of Objects / 2. Substance / d. Substance defined

19347

Substance needs independence, unity, and stability (for individuation); also it is a subject, for predicates [Perkins]

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

19216

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