Combining Texts

All the ideas for 'The Roots of Reference', 'Principles of Theoretical Logic' and 'The Principles of Science'

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

---

3 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]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism

8628	I hold that algebra and number are developments of logic [Jevons]

8. Modes of Existence / C. Powers and Dispositions / 3. Powers as Derived

14296

Dispositions are physical states of mechanism; when known, these replace the old disposition term [Quine]