5 ideas
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] |
4871 | A thing is free if it acts only by the necessity of its own nature [Spinoza] |
1748 | Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius] |
5989 | Archelaus said life began in a primeval slime [Archelaus, by Schofield] |