9 ideas
17884 | Mathematical set theory has many plausible stopping points, such as finitism, and predicativism [Koellner] |
17893 | 'Reflection principles' say the whole truth about sets can't be captured [Koellner] |
17813 | Löwenheim-Skolem says any theory with a true interpretation has a model in the natural numbers [White,NP] |
17894 | We have no argument to show a statement is absolutely undecidable [Koellner] |
17812 | Finite cardinalities don't need numbers as objects; numerical quantifiers will do [White,NP] |
17890 | There are at least eleven types of large cardinal, of increasing logical strength [Koellner] |
17887 | PA is consistent as far as we can accept, and we expand axioms to overcome limitations [Koellner] |
17891 | Arithmetical undecidability is always settled at the next stage up [Koellner] |
23996 | Akrasia is intelligible in hindsight, when we revisit our previous emotions [Blackburn] |