I’ve read the past threads on .9… equaling one and followed them pretty much, and thought I understood the deal (board consesus, they are are the same).
Unfortunately, I recently finished “The Ghost From The Grand Banks” by Arthur C. Clarke, where during the story he alludes several times that -1.9… is not the same as -2.
In fact, in the “Sources and Acknowledgments”, he explicity says:
Now I don’t drool when I talk, but I ain’t Arthur C. Clarke, either. And if he’s saying they ain’t the same, we’ll I’m confused again.
Is .999… = 1 under all conditions, for all time for ever and ever no matter how nitpicky you wanna be regardless of the equation you are plugging it into?
(I say that because the big part of the the story was the Mandelbrot set, and perhaps that makes a difference? - I’m not a mathematician so forgive my ignorance)