Combining Texts

All the ideas for 'The Birth of Tragedy', 'A Completeness Theorem in Modal Logic' and 'Russell's Ontological Development'

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8 ideas

1. Philosophy / D. Nature of Philosophy / 1. Philosophy

7848	Philosophy begins in the horror and absurdity of existence [Nietzsche, by Ansell Pearson]

2. Reason / D. Definition / 12. Paraphrase

21699

Russell offered a paraphrase of definite description, to avoid the commitment to objects [Quine]

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]

19. Language / A. Nature of Meaning / 7. Meaning Holism / a. Sentence meaning

21700

Taking sentences as the unit of meaning makes useful paraphrasing possible [Quine]

21701

Knowing a word is knowing the meanings of sentences which contain it [Quine]