Path: ...!weretis.net!feeder8.news.weretis.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "Chris M. Thomasson" Newsgroups: sci.math Subject: Re: Contradiction of bijections as a measure for infinite sets Date: Tue, 9 Apr 2024 15:47:11 -0700 Organization: A noiseless patient Spider Lines: 20 Message-ID: References: <56fdf4ac-fed6-4c64-96e1-0c11e62df55f@att.net> <6VFp9Pr9I394XSyRAi0w-GMz2GY@jntp> <373b543f-be44-4441-b9d3-9fdb44287e95@att.net> <780i3eKdKZ5P_9FaZ1WI-mHhUTs@jntp> <3eWOtn8set0bbtkUXb-j7rUUTKk@jntp> <7acd4175-a69c-4d36-ad23-5bf952f8e6ea@att.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Tue, 09 Apr 2024 22:47:11 +0200 (CEST) Injection-Info: dont-email.me; posting-host="1e0154287d270c974cd6798ddf950547"; logging-data="535024"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/3grgjGecA1lq3kSD5zpwoFeXRNYYRCJI=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:N7k42fPtnl9tgjX1WPMOY1RgoS0= Content-Language: en-US In-Reply-To: Bytes: 2123 On 4/9/2024 5:22 AM, WM wrote: > Le 09/04/2024 à 01:54, Jim Burns a écrit : >> On 4/8/2024 9:55 AM, WM wrote: >>> Le 07/04/2024 à 21:47, Jim Burns a écrit : >> >>>> The successor operation is closed in >>>> the natural numbers. >>> >>> For visible numbers only. >> >> Visibleᵂᴹ or darkᵂᴹ, >> k is a natural number  :⟺ >> k=0 ∨ ∃⟦0,k⦆: ∀i ∈ ⟦0,k⦆: i⁺¹ ∈ ⦅0,k⟧ > > Not correct if there are all natural numbers such that no further one > exists below ω. Multiplication by 2 creates numbers beyond ω, or there > would be numbers immune to multiplication. moron.