Path: ...!weretis.net!feeder9.news.weretis.net!news.quux.org!eternal-september.org!feeder2.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: WM Newsgroups: sci.math Subject: Re: How many different unit fractions are lessorequal than all unit fractions? (infinitary) Date: Thu, 31 Oct 2024 21:18:43 +0100 Organization: A noiseless patient Spider Lines: 30 Message-ID: References: <88e6a631-417a-4dd0-9443-a57116dcbd28@att.net> <7a1e34df-ffee-4d30-ae8c-2af5bcb1d932@att.net> <6a90a2e2-a4fa-4a8d-83e9-2e451fa8dd51@att.net> <7def94cc-4a51-4305-8e62-0c5b5f5a6b0a@att.net> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Thu, 31 Oct 2024 21:18:42 +0100 (CET) Injection-Info: dont-email.me; posting-host="141caeb41400108587fad7eb5def8ecf"; logging-data="2989334"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19Wi/uNwdS7txb4xPP/tlzMehpfgSzDgaY=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:vQbFwGBeK8tQgy5DaVYsmt9vaFk= In-Reply-To: Content-Language: en-US Bytes: 2905 On 31.10.2024 19:34, Jim Burns wrote: > On 10/31/2024 1:41 PM, WM wrote: >> On 31.10.2024 13:22, Jim Burns wrote: >>> On 10/31/2024 4:13 AM, WM wrote: > >>>>> Neither >>>>>   ∀n ∈ ℕ: 1/n - 1/(n+1) > 0 >>>>> nor >>>>>   ∀ᴿx > 0: ∀n ∈ ℕ: ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x] >>>>> is wrong. >>>> >>>> But the first formula predicts that >>>> only single unit fractions >>>> are existing on the real line. >>>> How could NUF(x) grow from zero by more than 1? >>> >>> Is >>> ⎛  ∀ᴿx > 0: >>> ⎜  ∀n ∈ ℕ: >>> ⎝ ⅟⌈n+⅟x⌉ ∈ ⅟ℕ∩(0,x] >>> wrong? >> >> One of two contradicting formulas must be dropped. > > Which (inside.quantifiers) formula is > the last which you accept with all prior formulas? Which one requires that NUF(x) can grow at an x ∈ ℝ by more than 1? Regards, WM