This little guy craves the light of knowledge and wants to know why 0.999… = 1. He wants rigour, but he does accept proofs starting with any sort of premise.

Enlighten him.

  • Tomorrow_Farewell [any, they/them]@hexbear.netOP
    link
    fedilink
    English
    arrow-up
    1
    ·
    5 months ago

    The ellipses mean infinity

    No, it does not. The ellipsis notation is used to denote a repeating pattern. It is not used to denote points that are named ‘infinity’ in spaces like Aleksandrov compactification and the extended space of real numbers.

    I am sorry, but your reply lacks rigour.

    • Water Bowl Slime@lemmygrad.ml
      link
      fedilink
      English
      arrow-up
      1
      ·
      5 months ago

      Is this a bit? I meant that the ellipses, in this context, mean that the nines go on forever. Obviously there are other symbols used to represent similar ideas, like ∞

      • Tomorrow_Farewell [any, they/them]@hexbear.netOP
        link
        fedilink
        English
        arrow-up
        1
        ·
        5 months ago

        I’m being serious. The word ‘infinity’ refers to some points from spaces like Aleksandrov compactification. It does not refer to any sort of repetition of any pattern. You cannot, for example, write ‘0.999∞’ or ‘0.999infinity’ to mean the same thing as ‘0.999…’ or ‘0.(9)’.