Combining Texts

All the ideas for 'fragments/reports', 'Foundations of Two-Dimensional Semantics' and 'Principles of Theoretical Logic'

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

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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]

19. Language / C. Assigning Meanings / 10. Two-Dimensional Semantics

14739

'Water' is two-dimensionally inconstant, with different intensions in different worlds [Chalmers, by Sider]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]