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Path: ...!fu-berlin.de!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Ben Bacarisse <ben@bsb.me.uk> Newsgroups: sci.math Subject: Re: More complex numbers than reals? Date: Tue, 09 Jul 2024 18:30:36 +0100 Organization: A noiseless patient Spider Lines: 21 Message-ID: <87v81epj5v.fsf@bsb.me.uk> References: <v6ihi1$18sp0$6@dont-email.me> <87msmqrbaq.fsf@bsb.me.uk> <0dUETcjzkRZSIY0ZGKDH2IRJuYQ@jntp> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Injection-Date: Tue, 09 Jul 2024 19:30:36 +0200 (CEST) Injection-Info: dont-email.me; posting-host="3bc602097df9bef4fe534cf857153f79"; logging-data="1549294"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19vdEgNM2rESmnN7JGzGWss5sKd9HMvUXA=" User-Agent: Gnus/5.13 (Gnus v5.13) Cancel-Lock: sha1:Z2GlYHUXLdEIxpGMUxC65g2HUSc= sha1:B9PRm5I5NkEm5gLX0FlRh8kITk0= X-BSB-Auth: 1.1896b6f4db61329f0422.20240709183036BST.87v81epj5v.fsf@bsb.me.uk Bytes: 1707 WM <wolfgang.mueckenheim@tha.de> writes: > Le 09/07/2024 � 14:37, Ben Bacarisse a �crit : > >> A mathematician, to whom this is a whole new topic, would start by >> asking you what you mean by "more". Without that, they could not >> possibly answer you. > > Good mathematicians could. > >> So, what do you mean by "more" when applied to >> sets like C and R? > > Proper subsets have less elements than their supersets. Let's see if Chris is using that definition. I think he's cleverer than you so he will probably want to be able to say that {1,2,3} has "more" elements than {4,5}. -- Ben.