Combining Texts

Ideas for 'Axiomatic Theories of Truth (2005 ver)', 'Conditional Assertion and Restricted Quantification' and 'Nature's Metaphysics'

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2 ideas

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula

9449	The plausible Barcan formula implies modality in the actual world [Bird]

4. Formal Logic / F. Set Theory ST / 1. Set Theory

15657

To prove the consistency of set theory, we must go beyond set theory [Halbach]