Combining Texts

All the ideas for 'A Completeness Theorem in Modal Logic', 'The Epistemology of Modality' and 'Individuation'

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9 ideas

4. Formal Logic / D. Modal Logic ML / 1. Modal Logic

10163

Propositional modal logic has been proved to be complete [Kripke, by Feferman/Feferman]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / a. Systems of modal logic

10760

With possible worlds, S4 and S5 are sound and complete, but S1-S3 are not even sound [Kripke, by Rossberg]

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

16189

The variable domain approach to quantified modal logic invalidates the Barcan Formula [Kripke, by Simchen]

15132

The Barcan formulas fail in models with varying domains [Kripke, by Williamson]

8. Modes of Existence / E. Nominalism / 3. Predicate Nominalism

8967	Not all predicates can be properties - 'is non-self-exemplifying', for example [Lowe]

9. Objects / A. Existence of Objects / 5. Individuation / a. Individuation

8965	Neither mere matter nor pure form can individuate a sphere, so it must be a combination [Lowe]

10. Modality / D. Knowledge of Modality / 4. Conceivable as Possible / a. Conceivable as possible

19440

How do you know you have conceived a thing deeply enough to assess its possibility? [Vaidya]

14. Science / D. Explanation / 1. Explanation / c. Direction of explanation

8968	If the flagpole causally explains the shadow, the shadow cannot explain the flagpole [Lowe]

15. Nature of Minds / C. Capacities of Minds / 3. Abstraction by mind

8966	Properties are facets of objects, only discussable separately by an act of abstraction [Lowe]