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: How many different unit fractions are lessorequal than all unit fractions? (infinitary) Date: Sat, 2 Nov 2024 12:11:08 -0000 (UTC) Organization: i2pn2 (i2pn.org) Message-ID: <8a4ff48cf28dff2aaf7c75b76ab12edc8a67b3ed@i2pn2.org> References: <6a90a2e2-a4fa-4a8d-83e9-2e451fa8dd51@att.net> <30dffbdf129483f7b61e3284d1e7bf2ad2e5ea16@i2pn2.org> <9ca97f4a24ae1e3041583265125cf860d2fada11@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Sat, 2 Nov 2024 12:11:08 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="590168"; 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: 3509 Lines: 36 Am Sat, 02 Nov 2024 10:59:04 +0100 schrieb WM: > On 01.11.2024 22:53, FromTheRafters wrote: >> WM explained on 11/1/2024 : >>> On 01.11.2024 19:39, FromTheRafters wrote: >>>> WM formulated the question : >>> >>>>>> Infinite subsets don't do that for you, even if you wish really >>>>>> hard. >>>>> They cannot evade if they are invariable. >>>> Sets don't change. >>> Therefore the elements do not depend on us and our knowledge. "If I >>> find x, then I can find x + 1" is not relevant. "For every x (that I >>> find) there is x + 1" is no relevant. All elements are there, >>> independent of what we know or do. Therefore the first and the last >>> are also there independent of us. Independently nonexistent. >>> If they weren't, their existence >>> would depend on some circumstances and could change. >> Circumstances like "there is no last element"? > That means, there is always another element. Potential infinity. No, it's just a property of the infinite, especially the actual. >> the set of denominators have no largest element to 'start' with. > If all unit fractions are existing, then a smallest unit fraction is > existing. Invalid deduction. > If NUF(x) has grown to ℵ₀ at x₀, then ℵ₀ unit fractions must > be between 0 and x₀. Hence at least ℵ₀ points with ℵ₀ intervals of > uncountably many points must be between 0 and x₀. That cannot happen at > x₀ = 0. Well AT zero the value is 0. No UF is zero or less... -- 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.