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] |
16643 | Accidents always remain suited to a subject [Bonaventura] |
16696 | Successive things reduce to permanent things [Bonaventura] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |