18080 | A tangent is a line connecting two points on a curve that are infinitely close together [Leibniz] |
18081 | Nature uses the infinite everywhere [Leibniz] |
18091 | Infinitesimals are ghosts of departed quantities [Berkeley] |
18085 | Values that approach zero, becoming less than any quantity, are 'infinitesimals' [Cauchy] |
18086 | Weierstrass eliminated talk of infinitesimals [Kitcher on Weierstrass] |
18110 | Infinitesimals are not actually contradictory, because they can be non-standard real numbers [Bostock] |
18083 | With infinitesimals, you divide by the time, then set the time to zero [Kitcher] |
18834 | Infinitesimals do not stand in a determinate order relation to zero [Rumfitt] |