• @jana
    link
    English
    69 months ago

    That’s not how infinity works

    • @[email protected]
      link
      fedilink
      English
      19 months ago

      Except it is. Infinities can have different sizes, and the size of an infinity needs to be taken into account when working with them.

      Rama subtracted one infinity that is twice the size of another from it, so he subtracted twice as many numbers as his equation implies.

      • @jana
        link
        English
        169 months ago

        Infinities do have different sizes, yes. But not on that scale. Both of these are countably infinite sets.

        Think about this: there are infinitely many primes. Obviously, not every number is prime. But you can still map primes 1:1 with the natural numbers. They’re both the same size of infinity.

        • @[email protected]
          link
          fedilink
          English
          09 months ago

          Not when you’re adding them together.

          c - 4c = -3 - 6 - 9 - 12…

          In order to make c the same as the divergent series you have to subtract the series:

          f = 0 + 4 + 0 + 8 …

          Which is not the same series as 4c.

          • @jana
            link
            English
            69 months ago

            Why not? How does that change the value?

            • @[email protected]
              link
              fedilink
              English
              29 months ago

              It makes the series equal length. You’ll notice this is discussed in the wikipedia article, and a bunch of bullshit handwaving has to be done to try and correct for it.

              c - 4c = -3 - 6 - 9 - 12…

              Simple as that, not some crap divergent series. Rama was a troll.

              • @jana
                link
                English
                79 months ago

                You’re adding a bunch of zeroes. Zero is the additive identity. It doesn’t change the value.

                • @[email protected]
                  link
                  fedilink
                  English
                  19 months ago

                  To clarify you cannot add zeros to a non-convergent series, which the series c is.

                  In regular summation you are only allowed to add one zero to the start of a convergent series without changing it’s value, since you know a convergent series has a specific answer.

                  But for non-convergent series you cannot do this mathematically in normal summation.

                  The value of a series is calculated by summing to n digits, and extrapolating. So c to 4 digits is 10, and to 5 digits is 15. 4c to 4 digits is 40, and to 5 digits is 60. But the series 4c with added zeroes at 4 digits is 12, and at 5 digits is still 12.

                  So 4c and 4c plus zeroes are not the same series. The only way to make 4c work in the posted equation is to use “super summation” which is a load of bull. Someone else posted a good video showing why this is the case.

                • @[email protected]
                  link
                  fedilink
                  English
                  09 months ago

                  But it does change the length of the infinity.

                  once again:

                  c - 4c = -3 - 6 - 9 - 12…

                  That’s it, that’s the answer. Anything else is clearly false.