Path: ...!news.misty.com!weretis.net!feeder9.news.weretis.net!i2pn.org!i2pn2.org!.POSTED!not-for-mail From: joes Newsgroups: sci.math Subject: Re: Incompleteness of Cantor's enumeration of the rational numbers (extra-ordinary) Date: Sun, 15 Dec 2024 12:39:05 -0000 (UTC) Organization: i2pn2 (i2pn.org) Message-ID: <323257d7133cbe48708dfbbd509db649e3a60ad4@i2pn2.org> References: <0b1bb1a1-40e3-464f-9e3d-a5ac22dfdc6f@tha.de> <95183b4d9c2e32651963bac79965313ad2bfe7e8@i2pn2.org> <33512b63716ac263c16b7d64cd1d77578c8aea9d@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Sun, 15 Dec 2024 12:39:05 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="2955082"; mail-complaints-to="usenet@i2pn2.org"; posting-account="nS1KMHaUuWOnF/ukOJzx6Ssd8y16q9UPs1GZ+I3D0CM"; User-Agent: Pan/0.145 (Duplicitous mercenary valetism; d7e168a git.gnome.org/pan2) X-Spam-Checker-Version: SpamAssassin 4.0.0 Bytes: 3324 Lines: 33 Am Sun, 15 Dec 2024 12:33:15 +0100 schrieb WM: > On 15.12.2024 12:03, Mikko wrote: >> On 2024-12-14 09:50:52 +0000, WM said: >>> On 14.12.2024 09:52, Mikko wrote: >>>> On 2024-12-12 22:06:58 +0000, WM said: >>>> is Dedekind-infinte: >>>> the successor function is a bijection between the set of all natural >>>> numbers and non-zero natural numbers. >>> This "bijection" appears possible but it is not. >> So you say that there is a natural number that does not have a next >> natural number. What number is that? > We cannot name dark numbers as individuals. Shame. > All numbers which can be > used a individuals belong to a potentially infinite collection ℕ_def. > There is no firm end. When n belongs to ℕ_def, then also n+1 and 2n and > n^n^n belong to ℕ_def. And thus all n e N do. > The only common property is that all the numbers > belong to a finite set and have an infinite set of dark successors. If all successors belong to N_def, it can’t be finite and the successors can’t be dark. > This is the only way to explain that the intersection of endegments > E(1), E(1)∩E(2), E(1)∩E(2)∩E(3), ... > loses all content in a sequences which allow the loss of only one number > per step. The explanation is that the sequence is infinitely long. -- Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math: It is not guaranteed that n+1 exists for every n.