Combining Texts

All the ideas for 'reports', 'Principles of Theoretical Logic' and 'Letters to Leibniz 1'

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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]
10. Modality / A. Necessity / 8. Transcendental Necessity
3016 Even the gods cannot strive against necessity [Pittacus, by Diog. Laertius]
26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / c. Essence and laws
17009 I won't object if someone shows that gravity consistently arises from the action of matter [Newton]