8 ideas
10882 | Predicative definitions only refer to entities outside the defined collection [Horsten] |
11074 | 'It is true that this follows' means simply: this follows [Wittgenstein] |
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] |
11073 | Two and one making three has the necessity of logical inference [Wittgenstein] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |