Path: ...!weretis.net!feeder9.news.weretis.net!i2pn.org!i2pn2.org!.POSTED!not-for-mail From: Richard Damon Newsgroups: sci.math Subject: Re: How many different unit fractions are lessorequal than all unit fractions? (infinitary) Date: Sun, 27 Oct 2024 14:00:30 -0400 Organization: i2pn2 (i2pn.org) Message-ID: References: <5e5ccee7-0c98-4701-aeaa-4950a3ce2938@att.net> <08a00c75-bf8d-4f9c-816a-83b8517ca04e@att.net> <062a0fa5-9a15-4649-8095-22c877af5ebf@att.net> <276fc9df-619b-4a10-b414-a04a74aa7378@att.net> <88e6a631-417a-4dd0-9443-a57116dcbd28@att.net> <7a1e34df-ffee-4d30-ae8c-2af5bcb1d932@att.net> <6a90a2e2-a4fa-4a8d-83e9-2e451fa8dd51@att.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sun, 27 Oct 2024 18:00:31 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="3933324"; mail-complaints-to="usenet@i2pn2.org"; posting-account="diqKR1lalukngNWEqoq9/uFtbkm5U+w3w6FQ0yesrXg"; User-Agent: Mozilla Thunderbird Content-Language: en-US X-Spam-Checker-Version: SpamAssassin 4.0.0 In-Reply-To: Bytes: 2844 Lines: 29 On 10/27/24 12:12 PM, WM wrote: > Am 27.10.2024 um 14:54 schrieb Moebius: >> Am 27.10.2024 um 08:38 schrieb WM: >> >>> and after NUF(x') = 1 >> >> There is no x' e IR such that NUF(x') = 1. > > If all unit fractions are existing, then there is each one. Never two or > more are at the same point. Hence there is a single one first. No two together, but no need for one to be first at the large 'n' end of them. That is the nature of being infinite. >> >> Hint: For each and every x e IR, x <= 0: NUF(x) = 0 >> and for each and every x e IR, x > 0: NUF(x) = aleph_0. > > That is blatantly wrong because it would require that ℵo unit fractions > exist between 0 and each and every x > 0, i.e., the open interval (0, 1]. > > Regards, WM > Right, like is what happens. It may seem strange to a person stuck in finite logic, but is true when you understand how infinity works.