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On 10.09.2024 13:41, Richard Damon wrote:The is none at the very begining of the negative end, because that "end" isn't in the set. The "bottom" of the set of unit fractions is 0.
Why do they need a beginning (at that end)?Because there is none in the negative and some in the prositive. At that end.
If you want to think of it as a cloud, go ahead. Just remember, it is a VERY DENSE cloud, whose density approaches infinity as it get near 0. (and for the real and rational, its density is infinity everywhere).There is a boundry, and that is 0, but that isn't the "first" of them, as it is outside the set.Either the set starts with one unit fraction or with a cloud of unit fractions.
Regards, WM
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