Sujet : Re: Incompleteness of Cantor's enumeration of the rational numbers
De : wolfgang.mueckenheim (at) *nospam* tha.de (WM)
Groupes : sci.mathDate : 12. Nov 2024, 15:30:25
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vgvoq0$1kc5f$4@dont-email.me>
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
User-Agent : Mozilla Thunderbird
On 12.11.2024 12:23, joes wrote:
Am Tue, 12 Nov 2024 09:58:12 +0100 schrieb WM:
Therefore I prove it. The set of intervals I(n) = [n - 1/10, n + 1/10]
cannot cover all fractions on the real axis.
It absolutely does, for all fractions n.
The claim however is for all fractions q, most of which are different from n.
The density is provably 1/5 for all finite initial segments of the real line. The sequence 1/5, 1/5, 1/5, ... has the limit 1/5. By translating intervals neither their size nor their multitude changes. Therefore never more than 1/5 of the real axis is covered. Most rationals remain naked.
Regards, WM