Combining Texts

Ideas for 'The Value of Science', 'On the Source of Necessity' and 'Properties'

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

display all the ideas for this combination of texts

---

2 ideas

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / g. System S4

15102

S4 says there must be some necessary truths (the actual ones, of which there is at least one) [Cameron]

4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / e. Iterative sets

10405

In the iterative conception of sets, they form a natural hierarchy [Swoyer]