Combining Texts

All the ideas for 'fragments/reports', 'Comment on Armstrong and Forrest' and 'Principles of Theoretical Logic'

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4 ideas

4. Formal Logic / C. Predicate Calculus PC / 1. Predicate Calculus PC

17750

The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki]

8. Modes of Existence / D. Universals / 1. Universals

15453

The main rivals to universals are resemblance or natural-class nominalism, or sparse trope theory [Lewis]

9. Objects / C. Structure of Objects / 1. Structure of an Object

15452

We could not uphold a truthmaker for 'Fa' without structures [Lewis]

13. Knowledge Criteria / D. Scepticism / 3. Illusion Scepticism

2667	A false object might give the same presentation as a true one [Arcesilaus, by Cicero]