5 ideas
17832 | Zermelo showed that the ZF axioms in 1930 were non-categorical [Zermelo, by Hallett,M] |
13028 | Replacement was added when some advanced theorems seemed to need it [Zermelo, by Maddy] |
17626 | The antinomy of endless advance and of completion is resolved in well-ordered transfinite numbers [Zermelo] |
12710 | As well as extension, bodies contain powers [Leibniz] |
14644 | If my conception of pain derives from me, it is a contradiction to speak of another's pain [Malcolm] |