4 ideas
10247 | We have no adequate logic at the moment, so mathematicians must create one [Veblen] |
17813 | Löwenheim-Skolem says any theory with a true interpretation has a model in the natural numbers [White,NP] |
17812 | Finite cardinalities don't need numbers as objects; numerical quantifiers will do [White,NP] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |