Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: WM Newsgroups: sci.math Subject: Re: The set of necessary FISONs Date: Thu, 20 Feb 2025 11:26:13 +0100 Organization: A noiseless patient Spider Lines: 15 Message-ID: References: <862117d5-9944-4eaa-9bbf-040e376c27e1@att.net> <61fda474-8104-4e37-a1cc-d9fec975bdc5@att.net> <89d12ce1-5183-40f6-aa37-e4c1522fbc3e@att.net> <412fef253b0cce7487c30301e52aa8b3ae1bdeda@i2pn2.org> <2c490daaadda4aa226b88ff0e98a1c1f4357cb38@i2pn2.org> <4ebfd24f5b4eb2faf12a367c0dd3976b78c15c5c@i2pn2.org> <253cfda389d35df4232c6c6b2e4db60d59e34ebc@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Thu, 20 Feb 2025 11:26:13 +0100 (CET) Injection-Info: dont-email.me; posting-host="5fd5b46ee2dbc38e71580a8df378aca7"; logging-data="2929678"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18LRTa/6tiiNXq7zp2tDvcJu33R2LTwTtY=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:vZq5vco+eTk/DiHuCNmWwVJM9Bg= Content-Language: en-US In-Reply-To: <253cfda389d35df4232c6c6b2e4db60d59e34ebc@i2pn2.org> Bytes: 2576 On 19.02.2025 18:16, joes wrote: > Am Wed, 19 Feb 2025 18:05:01 +0100 schrieb WM: >> By induction all elements can be defined. This guarantees the existence >> of an infinite set. Um aber die Existenz "unendlicher" Mengen zu >> sichern, bedürfen wir noch des folgenden ... Axioms. [Zermelo: >> Untersuchungen über die Grundlagen der Mengenlehre I, S. 266] > Sure. Nobody is arguing against that. Fine. Induction covers all elements of an infinite inductive set. There is no k+1 remaining. Subtraction of all elements leaves the empty set. UF = ℕ ==> Ø = ℕ. Regards, WM