5 ideas
15381 | Dyamic logics model changes between classical states, in action, belief, and computing [Uckelman] |
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] |
9226 | If mathematical theories conflict, it may just be that they have different subject matter [Field,H] |