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Am 17.07.2024 um 18:02 schrieb Moebius:We look at all points.
It seems that you have forgotten your OWN definition of NUF, Mückenheim.
No, it does not "require aleph_0 unit fractions at that point x" but aleph_0 unit fractions THAT ARE <= x. (Holy shit!)
NUF increases at poits x, but never by more than 1 at one point..Hint: NFU(x) := |{u e {1/n : n e IN} : u <= x}|This means NFU(x) = a iff the (cardinal)number of the set of unit fractions which are <= x is a.
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