Sujet : Re: How many different unit fractions are lessorequal than all unit fractions?
De : james.g.burns (at) *nospam* att.net (Jim Burns)
Groupes : sci.mathDate : 09. Sep 2024, 20:43:44
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <18f1bfa8-ed9f-4aa2-9239-4b553b4414ab@att.net>
References : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
User-Agent : Mozilla Thunderbird
On 9/9/2024 2:44 PM, WM wrote:
On 09.09.2024 17:15, joes wrote:
I still don’t understand.
You can choose any size of interval and
slide it around to include
an arbitrary number of unit fractions.
>
ℵo unit fractions exist invariably
The unit fractions
before x > 0 and before x′ > 0
vary.
For both x and x′, they are ℵ₀.many,
but not the same ℵ₀.many.
and require a minimum length d.
No.
There is a greatest.lower.bound 0
but there isn't a _minimum_
ℵ₀.many unit.fractions do not
fit in a 0.length interval.
For each d > 0
ℵ₀.many unit.fractions fit in (0,d)
k ⟼ ⅟⌊k+⅟d⌋
and
for ½⋅d
ℵ₀.many unit.fractions fit in (0,½⋅d)
k ⟼ ⅟⌊k+2⋅⅟d⌋
-- which aren't the same as ⅟⌊k+⅟d⌋ --
so
each d > 0 is not.minimum.