Combining Texts

Ideas for 'The Boundary Stones of Thought', 'Counterparts and Identity' and 'Truth Rehabilitated'

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2 ideas

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / h. System S5

18814

'Absolute necessity' would have to rest on S5 [Rumfitt]

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

18823

To say there could have been people who don't exist, but deny those possible things, rejects Barcan [Stalnaker, by Rumfitt]