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From: WM <wolfgang.mueckenheim@tha.de>
Newsgroups: sci.math
Subject: Re: Incompleteness of Cantor's enumeration of the rational numbers
 (extra-ordinary)
Date: Sat, 28 Dec 2024 14:58:50 +0100
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On 28.12.2024 06:23, Moebius wrote:
> 
>>> On 12/17/24 4:51 PM, WM wrote:
> 
>>>> all FISONs contain/are all n.

All FISONs contain all *definable* n.
> Hint: For each and every n e IN there is a FISON such that n is in it.
> 
> BUT there's no FISON such that each and every n e IN is in it.

Every FISON contains less than half of all natural numbers. Therefore 
the union of all of them contains less than half of all natural numbers.

Regards, WM