Combining Texts

All the ideas for 'works', 'Meaning and Necessity' and 'The Evolution of Co-Operation'

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5 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]

19. Language / C. Assigning Meanings / 8. Possible Worlds Semantics

11968

The intension of a sentence is the set of all possible worlds in which it is true [Carnap, by Kaplan]

23. Ethics / B. Contract Ethics / 8. Contract Strategies

22725

When players don't meet again, defection is the best strategy [Axelrod]

22724

Good strategies avoid conflict, respond to hostility, forgive, and are clear [Axelrod]