Path: news.eternal-september.org!eternal-september.org!feeder3.eternal-september.org!news.quux.org!news.nk.ca!rocksolid2!i2pn2.org!.POSTED!not-for-mail From: joes Newsgroups: sci.math Subject: Re: The set of necessary FISONs Date: Fri, 14 Feb 2025 12:52:30 -0000 (UTC) Organization: i2pn2 (i2pn.org) Message-ID: <8168ff403872d2b73e605fd425f467035477d04a@i2pn2.org> References: <999fb07e-7bef-4423-afeb-a08922613c65@att.net> <0d24c3fd-cd63-4e21-9dd4-ab1360560b09@att.net> <79920977-902d-4f59-a11c-497383221c82@att.net> <468b9c37-ba93-485c-8685-4b320e168251@att.net> <68bab5c2-50d3-43fc-be0d-51e01c5952bb@att.net> <1e5cb0d4-f447-4fa7-b1e9-8056b03d27a2@att.net> <8a4c44c4ba0d3260a90d463acfa814fbc83f557a@i2pn2.org> <3ded4e5a144a7ae8488b4ed2540f9b3d82f54b29@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Fri, 14 Feb 2025 12:52:30 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="1906"; 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 Am Fri, 14 Feb 2025 13:46:53 +0100 schrieb WM: > On 13.02.2025 15:02, joes wrote: >> Am Thu, 13 Feb 2025 14:51:44 +0100 schrieb WM: >>> On 13.02.2025 13:54, joes wrote: >>>> Am Thu, 13 Feb 2025 12:59:56 +0100 schrieb WM: >>> >>>>> All of us who know induction know that by induction we have obtained >>>>> that all FISONs can be removed without changing the result. >>>> The result has certainly changed from a nonempty set, whatever you >>>> think the union of inf. many FISONs is. >>> The assumption was UF = ℕ and has not changed by omitting any FISON. >> Yes, but it does change when you omit *all*. > It does because induction is valid for all elements of the inductive > set. „All”, i.e. inf. many, is not an element of that. >> UF is not empty. > When will you learn that nobody claims such a nonsense? Am Thu, 13 Feb 2025 12:59:56 +0100 schrieb WM: > All FISONs can be removed without changing the result. -- 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.