Path: ...!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Mon, 07 Oct 2024 23:44:21 +0000 Subject: Re: How many different unit fractions are lessorequal than all unit fractions? (infinitary) Newsgroups: sci.math References: <55cbb075e2f793e3c52f55af73c82c61d2ce8d44@i2pn2.org> <4bc3b086-247a-4547-89cc-1d47f502659d@tha.de> From: Ross Finlayson Date: Mon, 7 Oct 2024 16:44:32 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Message-ID: <1uydndG6Qf3L75n6nZ2dnZfqnPcAAAAA@giganews.com> Lines: 34 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-SfRKPnBHcq8PK9lnnS0zbqDKT3xY9qVbwKHbpd3dSj/U/6sgljvNUJbAUgaevSch3Q1qs4kTWSer89w!LBWyAPzKJeNggp/Ous7Xw5bAXdhfqqgLvagoBjxy0D6cMPnnW9R5zJRxnpNrwK9yrA/ysDsgRs/D!yA== X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 2678 On 10/07/2024 09:11 AM, Alan Mackenzie wrote: > FromTheRafters wrote: >> Alan Mackenzie wrote : > > [ .... ] > >>> The idea of one countable set being "bigger" than another countable set is >>> simply nonsense. > >> Oops. Finite sets are countable too. :) > > Yes indeed! Thanks for pointing out my mistake. What I should have > written (WM please take note) is: > > The idea of one countably infinite set being "bigger" than another > countably infinite set is simply nonsense. > Oh, no, there are plenty of "size" relations given other aspects that merely cardinality that have anything else to do with what a set models. For example, there's OUTPACING which makes for that a proper superset of a set, is larger, by the OUTPACING relation, it's a fact of mathematics. And exactly half of the integers are even. It's called density and it's a property of them including sets of them. You're about as bad.