Combining Texts

Ideas for 'To be is to be the value of a variable..', 'Philosophical Logic' and 'Does Ontology Rest on a Mistake?'

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7 ideas

4. Formal Logic / D. Modal Logic ML / 6. Temporal Logic

15413

With four tense operators, all complex tenses reduce to fourteen basic cases [Burgess]

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

15415

The temporal Barcan formulas fix what exists, which seems absurd [Burgess]

4. Formal Logic / E. Nonclassical Logics / 2. Intuitionist Logic

15430

Is classical logic a part of intuitionist logic, or vice versa? [Burgess]

15431

It is still unsettled whether standard intuitionist logic is complete [Burgess]

4. Formal Logic / E. Nonclassical Logics / 5. Relevant Logic

15429

Relevance logic's → is perhaps expressible by 'if A, then B, for that reason' [Burgess]

4. Formal Logic / F. Set Theory ST / 5. Conceptions of Set / a. Sets as existing

7785	The use of plurals doesn't commit us to sets; there do not exist individuals and collections [Boolos]

4. Formal Logic / F. Set Theory ST / 8. Critique of Set Theory

10699

Does a bowl of Cheerios contain all its sets and subsets? [Boolos]