• KoboldCoterie@pawb.social
    link
    fedilink
    arrow-up
    53
    arrow-down
    1
    ·
    edit-2
    1 year ago

    There is no difference, not even an infinitesimally small one. 1 and 0.999… represent the exact same number.

      • funnystuff97@lemmy.world
        link
        fedilink
        arrow-up
        5
        ·
        edit-2
        1 year ago

        Right, it’s only a problem because we chose base ten (a rather inconvenient number). If we did math in base twelve, 1/3 in base twelve would simply be 0.4. It doesn’t repeat. Simply, then, 1/3 = 0.4, then (0.4 × 3) = (0.4 + 0.4 + 0.4) = 1 in base twelve. No issues, no limits, just clean simple addition. No more simple than how 0.5 + 0.5 = 1 in base ten.

        One problem in base twelve is that 1/5 does repeat, being about 0.2497… repeating. But eh, who needs 5? So what, we have 5 fingers, big whoop, it’s not that great of a number. 6 on the other hand, what an amazing number. I wish we had 6 fingers, that’d be great, and we would have evolved to use base twelve, a much better base!

        • clutchmatic@lemmy.world
          link
          fedilink
          arrow-up
          1
          ·
          1 year ago

          I mean, there is no perfect base. But the 1/3=0.333… thing is to be understood as a representation of that 1 split three ways

      • KoboldCoterie@pawb.social
        link
        fedilink
        arrow-up
        15
        arrow-down
        1
        ·
        1 year ago

        An infinitesimal is a non-zero number that is closer to zero than any real number. An infinitesimal is what would have to be between 0.999… and 1.

          • KoboldCoterie@pawb.social
            link
            fedilink
            arrow-up
            8
            ·
            edit-2
            1 year ago

            It’s a weird concept and it’s possible that I’m using it incorrectly, too - but the context at least is correct. :)

            Edit: I think I am using it incorrectly, actually, as in reality the difference is infinitesimally small. But the general idea I was trying to get across is that there is no real number between 0.999… and 1. :)

            • LegendofZelda64@lemmy.fmhy.ml
              link
              fedilink
              arrow-up
              2
              arrow-down
              1
              ·
              1 year ago

              I think you did use it right tho. It is a infinitesimal difference between 0.999 and 1.

              “Infinitesimal” means immeasurably or incalculably small, or taking on values arbitrarily close to but greater than zero.

              • Kogasa@programming.dev
                link
                fedilink
                arrow-up
                4
                ·
                1 year ago

                The difference between 0.999… and 1 is 0.

                It is possible to define a number system in which there are numbers infinitesimally less than 1, i.e. they are greater than every real number less than 1 (but are not equal to 1). But this has nothing to do with the standard definition of the expression “0.999…,” which is defined as the limit of the sequence (0, 0.9, 0.99, 0.999, …) and hence exactly equal to 1.

        • Ghoelian@feddit.nl
          link
          fedilink
          arrow-up
          2
          ·
          1 year ago

          Wait what

          I always thought infinitesimal was one of those fake words, like gazillion or something

          • KoboldCoterie@pawb.social
            link
            fedilink
            arrow-up
            3
            ·
            1 year ago

            It sounds like it should be, but it’s actually a real (or, non-real, I suppose, in mathematical terms) thing! :)