Combining Texts

All the ideas for 'Mathematical Logic (revised)', 'Model Theory for Modal Logic I' and 'Logic [1897]'

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4 ideas

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

9560	S5 provides the correct logic for necessity in the broadly logical sense [Fine,K]

5. Theory of Logic / E. Structures of Logic / 4. Variables in Logic

12221

'Corner quotes' (quasi-quotation) designate 'whatever these terms designate' [Quine]

5. Theory of Logic / F. Referring in Logic / 1. Naming / f. Names eliminated

19321

We might do without names, by converting them into predicates [Quine, by Kirkham]

13. Knowledge Criteria / C. External Justification / 2. Causal Justification

11052

Psychological logic can't distinguish justification from causes of a belief [Frege]