6 ideas
15390 | Metaphysics attempts to give an account of everything, in terms of categories and principles [Simons] |
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] |
17836 | The General Continuum Hypothesis and its negation are both consistent with ZF [Hallett,M] |
6019 | If someone squashed a horse to make a dog, something new would now exist [Mnesarchus] |