4 ideas
17831 | Cantor gives informal versions of ZF axioms as ways of getting from one set to another [Cantor, by Lake] |
16597 | Quantity is the capacity to be divided [Digby] |
16731 | Colours arise from the rarity, density and mixture of matter [Digby] |
2116 | The concept of an existing thing must contain more than the concept of a non-existing thing [Leibniz] |