Combining Texts

All the ideas for 'fragments/reports', 'Elusive Knowledge' and 'A Completeness Theorem in Modal Logic'

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11 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]

11. Knowledge Aims / A. Knowledge / 4. Belief / a. Beliefs

12899

The timid student has knowledge without belief, lacking confidence in their correct answer [Lewis]

11. Knowledge Aims / B. Certain Knowledge / 3. Fallibilism

12897

To say S knows P, but cannot eliminate not-P, sounds like a contradiction [Lewis]

13. Knowledge Criteria / A. Justification Problems / 1. Justification / b. Need for justification

12898

Justification is neither sufficient nor necessary for knowledge [Lewis]

13. Knowledge Criteria / C. External Justification / 6. Contextual Justification / a. Contextualism

12895

Knowing is context-sensitive because the domain of quantification varies [Lewis, by Cohen,S]

19562

We have knowledge if alternatives are eliminated, but appropriate alternatives depend on context [Lewis, by Cohen,S]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]