9 ideas
10882 | Predicative definitions only refer to entities outside the defined collection [Horsten] |
23476 | Logical constants seem to be entities in propositions, but are actually pure form [Russell] |
23477 | We use logical notions, so they must be objects - but I don't know what they really are [Russell] |
18273 | Logical truths are known by their extreme generality [Russell] |
10884 | A theory is 'categorical' if it has just one model up to isomorphism [Horsten] |
10885 | Computer proofs don't provide explanations [Horsten] |
10881 | The concept of 'ordinal number' is set-theoretic, not arithmetical [Horsten] |
22315 | There can't be a negative of a complex, which is negated by its non-existence [Potter on Russell] |
19423 | By an 'idea' I mean not an actual thought, but the resources we can draw on to think [Leibniz] |