5 ideas
8920 | Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz] |
17809 | Gödel showed that the syntactic approach to the infinite is of limited value [Kreisel] |
17810 | The study of mathematical foundations needs new non-mathematical concepts [Kreisel] |
16391 | Indexical thoughts are about themselves, and ascribe properties to themselves [Perry, by Recanati] |
17811 | The natural conception of points ducks the problem of naming or constructing each point [Kreisel] |