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: Tue, 28 Jan 2025 16:37:09 +0100 Organization: A noiseless patient Spider Lines: 14 Message-ID: References: <903de8e1-3538-4cfe-9f7a-6509eda47ab6@att.net> <3844edd7-0750-4418-bff6-2759817446b3@att.net> <27377646-137a-4f8f-a7bb-a75707b2da96@att.net> <965ee9868f28953d437113d0d38f069815499a3f@i2pn2.org> <77fb6230f3ef78f7524b70785c4772313e238258@i2pn2.org> <814297ada299a65bb9f427ddec5646afcc94be9f@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Tue, 28 Jan 2025 16:37:09 +0100 (CET) Injection-Info: dont-email.me; posting-host="de0cc7da7ef0533db4a416004be67f09"; logging-data="1972784"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX182ltIrWuhEHC94UQ8IR2bkez3c5dBYOpg=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:ruNKrCGextOq/BTcgtW/1lUl8dY= In-Reply-To: Content-Language: en-US Bytes: 2378 On 28.01.2025 16:24, joes wrote: > Am Tue, 28 Jan 2025 16:15:35 +0100 schrieb WM: >> On 28.01.2025 13:45, Richard Damon wrote: >>> On 1/28/25 3:58 AM, WM wrote: >> >>> Many sets of FISONs whose union is N exist, and each of those sets has >>> a first element. >> Name the first element of only one of those sets which is required in >> that set. > Nobody said it was necessary. > If no FISON is necessary, then all can be discarded. Regards, WM