5 ideas
3340 | Von Neumann defines each number as the set of all smaller numbers [Neumann, by Blackburn] |
3355 | Von Neumann wanted mathematical functions to replace sets [Neumann, by Benardete,JA] |
22716 | Von Neumann defined ordinals as the set of all smaller ordinals [Neumann, by Poundstone] |
18201 | General principles can be obvious in mathematics, but bold speculations in empirical science [Parsons,C] |
9558 | All scientific tests will verify mathematics, so it is a background, not something being tested [Sober] |