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] |
3178 | A fast machine could pass all behavioural tests with a vast lookup table [Block, by Rey] |
21650 | No language is semantically referential; it all occurs at the level of thought or utterance [Pietroski, by Hofweber] |