4 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] |
16051 | Life has a new supervenient relation, which alters its underlying physical events [Morgan,L] |
3016 | Even the gods cannot strive against necessity [Pittacus, by Diog. Laertius] |