8 ideas
17833 | The first-order ZF axiomatisation is highly non-categorical [Hallett,M] |
17834 | Non-categoricity reveals a sort of incompleteness, with sets existing that the axioms don't reveal [Hallett,M] |
17837 | Zermelo allows ur-elements, to enable the widespread application of set-theory [Hallett,M] |
9226 | If mathematical theories conflict, it may just be that they have different subject matter [Field,H] |
17836 | The General Continuum Hypothesis and its negation are both consistent with ZF [Hallett,M] |
12900 | How could 'S knows he has hands' not have a fixed content? [Bach] |
12901 | If contextualism is right, knowledge sentences are baffling out of their context [Bach] |
12902 | Sceptics aren't changing the meaning of 'know', but claiming knowing is tougher than we think [Bach] |