5 ideas
18189 | ZFC could contain a contradiction, and it can never prove its own consistency [MacLane] |
10304 | Very few things in set theory remain valid in intuitionist mathematics [Bernays] |
10303 | Restricted Platonism is just an ideal projection of a domain of thought [Bernays] |
10306 | Mathematical abstraction just goes in a different direction from logic [Bernays] |
5880 | Xenocrates held that the soul had no form or substance, but was number [Xenocrates, by Cicero] |