> So does this mean that an infinitely small number is zero? What does "infinitely small" mean? > As in 1/∞ ? What notion of division are we talking about h

> So does this mean that an infinitely small number is zero? What does "infinitely small" mean? > As in 1/∞ ? What notion of division are we talking about here? The division most people expect is that of real numbers. ∞ is not a real number, so you'll have to specify what you mean.