Combining Texts

Ideas for 'Metaphysics', 'Nature's Metaphysics' and 'Apriority and Existence'

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2 ideas

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic

8859	The main modal logics disagree over three key formulae [Yablo]

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

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