Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: "Chris M. Thomasson" Newsgroups: sci.math Subject: Re: How many different unit fractions are lessorequal than all unit fractions? Date: Fri, 18 Oct 2024 14:01:26 -0700 Organization: A noiseless patient Spider Lines: 39 Message-ID: References: <405557f7289631d63264c712d137244c940b9926@i2pn2.org> <13c08e96ad635f8142b38d89863a80caf17a32a8@i2pn2.org> <4faa63d0ff8c163f01a38736aeb5732184218a29@i2pn2.org> <1aabd037-86bc-47bd-b402-f6b29c5c33e4@att.net> <795ca0f4-114b-4c3a-a4de-7becfa77cd9a@att.net> <15dc80c5-e0be-4e8b-9148-c4a5e0387256@att.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Fri, 18 Oct 2024 23:01:28 +0200 (CEST) Injection-Info: dont-email.me; posting-host="f276c36720a0a7a49bc7397de7896a56"; logging-data="3645877"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/FpImxpT+H1abZJIOpcoSuD1R9y3xIHKY=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:vS1NR3oHeXm+SFXQLws1OPdMZZ0= In-Reply-To: Content-Language: en-US Bytes: 3002 On 10/18/2024 1:55 PM, FromTheRafters wrote: > Jim Burns brought next idea : >> On 10/18/2024 2:13 PM, Chris M. Thomasson wrote: >>> On 9/16/2024 2:38 PM, Jim Burns wrote: >>>> On 9/16/2024 4:15 PM, Chris M. Thomasson wrote: >> >>>>> WM is a strange one. >>>>> If no point is between them, >>>>> then they are the same. >>>> >>>> If no point is between different points, >>>> then the points aren't in the complete line. >>> >>> If p0 and p1 are the same point then p1 - p0 is zero. >>> >>> Say: >>> >>> p0 = (1, 2, 3) >>> p1 = (1, 2, 3) >>> >>> pdif = p1 - p0 >>> >>> pdif would be (0, 0, 0) >>> >>> See? >> >> I wouldn't choose to say that 0 is between 0 and 0 >> If necessary, >> I would correct what I'd said so that >> it could not be taken to mean that. > > Yeah, you said different as opposed to unique. I simply took it to mean > not the same point. [...] if p0 and p1 are different in my example then pdif will not be all components zero.