Path: news.eternal-september.org!eternal-september.org!feeder3.eternal-september.org!news.quux.org!news.nk.ca!rocksolid2!i2pn2.org!.POSTED!not-for-mail From: Richard Damon Newsgroups: sci.math Subject: Re: The set of necessary FISONs Date: Mon, 17 Feb 2025 22:02:12 -0500 Organization: i2pn2 (i2pn.org) Message-ID: References: <1e5cb0d4-f447-4fa7-b1e9-8056b03d27a2@att.net> <8a4c44c4ba0d3260a90d463acfa814fbc83f557a@i2pn2.org> <3ded4e5a144a7ae8488b4ed2540f9b3d82f54b29@i2pn2.org> <8168ff403872d2b73e605fd425f467035477d04a@i2pn2.org> <1bddcf577f6dad16e6b65b0005872279218a8f19@i2pn2.org> <9a6137a0f0ddea74fcd2105c0ba2721a73a9df8c@i2pn2.org> <22831c5f673571f054acf8403a5f91a009cf622f@i2pn2.org> <1af5110bc7a2574a54110067a7d9a7b4a9426041@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Tue, 18 Feb 2025 03:02:13 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="559652"; mail-complaints-to="usenet@i2pn2.org"; posting-account="diqKR1lalukngNWEqoq9/uFtbkm5U+w3w6FQ0yesrXg"; User-Agent: Mozilla Thunderbird Content-Language: en-US X-Spam-Checker-Version: SpamAssassin 4.0.0 In-Reply-To: On 2/17/25 2:22 PM, WM wrote: > On 16.02.2025 19:39, Richard Damon wrote: >> On 2/16/25 11:51 AM, WM wrote: > >>> Show the first FISON which changes the premise U(F) = ℕ. > >> Why does there need to be? > > Otherwise there is none, and the conclusion { } = ℕ is valid. > > Regards, WM No, just because none are REQUIRED doesn't mean that none can be used. After all, there are no required factors of 36, as we can do either 4*9 or 3*12, so none of them are required. Your claim is the same as saying we can't factor 36. Sorry, but your logic is just faulty.