4 ideas
10180 | Mathematicians do not study objects, but relations between objects [Poincaré] |
9145 | We form the image of a cardinal number by a double abstraction, from the elements and from their order [Cantor] |
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] |