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] |
9182 | Ancient names like 'Obadiah' depend on tradition, not on where the name originated [Dummett] |
9181 | The causal theory of reference can't distinguish just hearing a name from knowing its use [Dummett] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |