9 ideas
11074 | 'It is true that this follows' means simply: this follows [Wittgenstein] |
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] |
17894 | We have no argument to show a statement is absolutely undecidable [Koellner] |
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] |
11073 | Two and one making three has the necessity of logical inference [Wittgenstein] |
20930 | The existence of law is one thing, its merits and demerits another [Austin,J] |