Combining Texts

All the ideas for 'fragments/reports', 'Conditional Assertion and Restricted Quantification' and 'works'

expand these ideas     |    start again     |     specify just one area for these texts

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4 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / a. Axioms for sets

9565	Zermelo made 'set' and 'member' undefined axioms [Zermelo, by Chihara]

3339	For Zermelo's set theory the empty set is zero and the successor of each number is its unit set [Zermelo, by Blackburn]

13. Knowledge Criteria / D. Scepticism / 1. Scepticism

3061	Anaxarchus said that he was not even sure that he knew nothing [Anaxarchus, by Diog. Laertius]

14. Science / C. Induction / 5. Paradoxes of Induction / b. Raven paradox

19000

Read 'all ravens are black' as about ravens, not as about an implication [Belnap]