13 ms·

I'm talking about various forms of infinitesimals, yes. In a sense they're zero, but in another sense they're not. For the reasons you mention, these models h

I'm talking about various forms of infinitesimals, yes. In a sense they're zero, but in another sense they're not. For the reasons you mention, these models have 0 != -0. :-)

tprice7 9y ago
But don't these models all have a true zero, distinct from the infinitesimals, which is its own negative?
- cperciva 9y ago
  Usually, yes. But sometimes it's written as 0^\infty.
  - tprice7 9y ago
    "Usually" So there is an instance where this isn't the case?
    - cperciva 9y ago
      Well... notation. People come up with all sorts of ways of writing things and all sorts of weird models.