Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Mikko Newsgroups: sci.logic Subject: Re: Incompleteness of Cantor's enumeration of the rational numbers Date: Sun, 15 Dec 2024 12:51:21 +0200 Organization: - Lines: 44 Message-ID: References: <539edbdf516d69a3f1207687b802be7a86bd3b48@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sun, 15 Dec 2024 11:51:22 +0100 (CET) Injection-Info: dont-email.me; posting-host="548af6b5414b171555f35e270ee8ad08"; logging-data="578803"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18XI8t3NCA0Yhka4X5rv1Np" User-Agent: Unison/2.2 Cancel-Lock: sha1:2z/FTCGVuxfhQy91Tz/+2oI4sgE= Bytes: 2966 On 2024-12-14 21:40:48 +0000, WM said: > On 14.12.2024 19:53, Richard Damon wrote: >> On 12/14/24 10:46 AM, WM wrote: >>> On 14.12.2024 12:06, joes wrote: >>>> Am Sat, 14 Dec 2024 09:42:37 +0100 schrieb WM: >>>>> On 14.12.2024 09:30, Mikko wrote: >>>>>> On 2024-12-13 10:28:44 +0000, WM said: >>>>>>> On 13.12.2024 10:46, Mikko wrote: >>>>>>> >>>>>>>> Between any two intervals there is space and that space contains >>>>>>>> other intervals. >>>>>>> No. Starting from a point in the complement the cursor will hit a >>>>>>> first interval. This is true for all visible intervals. >>>>>> False. From a point that is not a part of an interval no interval is >>>>>> the nearest one because another interval is nearer. >>>>> IF ALL intervals and their endpoints are existing as invariable points >>>>> on the real line this cannot happen. In potential infinity however >>>>> between any two points new intervals come into being. >>>> They are ALREADY there. >>> >>> Therefore they cannot appear after the cursor has passed their >>> positions. Every interval and every end of an interval would be hit by >>> the cursor. >>> >> Where did the cursor come from in the first place? > > It starts in the complement of the intervals of measure 3 covering > rational numbers. If the cursor is thrown by chance, the chance is 3/oo > = 0 that it hits an interval. >> >> And why did it pass them when you tried to place t? > > It passes an interval when it moves. >> >> This is your old problem of there not being a "next" in a dense set. > > In a geometry where all points exist, all points can be passed. Yes but none of them can be passed before passing other opoints. -- Mikko