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Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Mikko <mikko.levanto@iki.fi> Newsgroups: sci.logic Subject: Re: Replacement of Cardinality Date: Tue, 30 Jul 2024 10:26:47 +0300 Organization: - Lines: 19 Message-ID: <v8a4jn$ufis$1@dont-email.me> References: <hsRF8g6ZiIZRPFaWbZaL2jR1IiU@jntp> <v82amn$3acnb$2@dont-email.me> <nnNQiU97cYPJ7ikub_NQj-NjNiA@jntp> <v87lpn$dsd3$1@dont-email.me> <QLZ_2ACRhG592HBeU_Y-pOZfUzY@jntp> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Tue, 30 Jul 2024 09:26:48 +0200 (CEST) Injection-Info: dont-email.me; posting-host="329af3d797696bf444d9a1dc8986292a"; logging-data="999004"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX185OHUdhQNDXp2/vlrzsVdO" User-Agent: Unison/2.2 Cancel-Lock: sha1:BFunrwl9f58g3oModN52cQwbnQo= Bytes: 1683 On 2024-07-29 13:15:36 +0000, WM said: > Le 29/07/2024 à 11:01, Mikko a écrit : > >> He also notes that what we have learned from finite quatities does >> not apply to infinity. > > Unit fractions are isolated. They have distances. The function "unit > fractions between 0 and x" can nowhere grow by more than 1. The number of unit fractions between 0 and x is infinite and the number of unit fractions between 0 and y is infinite. Whether one infinity is bigger or smaller than another infinity is not answerable merely on the basis of our experinece about finite quantities but only after a carful analysis if at all. -- Mikko