7 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
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] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |
21996 | Freedom only comes when labour is no longer necessary [Marx] |