Combining Texts

All the ideas for 'Particulars in Particular Clothing', 'Identity over Time' and 'Principles of Theoretical Logic'

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5 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 / B. Properties / 13. Tropes / a. Nature of tropes

18431

Internal relations combine some tropes into a nucleus, which bears the non-essential tropes [Simons, by Edwards]

9. Objects / E. Objects over Time / 1. Objects over Time

16025

If things change they become different - but then no one thing undergoes the change! [Gallois]

9. Objects / E. Objects over Time / 4. Four-Dimensionalism

16026

4D: time is space-like; a thing is its history; past and future are real; or things extend in time [Gallois]

9. Objects / F. Identity among Objects / 6. Identity between Objects

16027

If two things are equal, each side involves a necessity, so the equality is necessary [Gallois]