5 ideas
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] |
2957 | Brain bisection suggests unity of mind isn't all-or-nothing [Nagel, by Lockwood] |
3285 | We may be unable to abandon personal identity, even when split-brains have undermined it [Nagel] |
20662 | The biology of societies: kin selection, parenting, mating; status, territory, contracts [Wilson,EO] |