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From: Richard Damon <richard@damon-family.org>
Newsgroups: sci.math
Subject: Re: How many different unit fractions are lessorequal than all unit
 fractions? (infinitary)
Date: Mon, 7 Oct 2024 07:17:44 -0400
Organization: i2pn2 (i2pn.org)
Message-ID: <81f6f0271a53803c0bf79be304ce2484e33aecda@i2pn2.org>
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On 10/7/24 7:13 AM, joes wrote:
> Am Mon, 07 Oct 2024 10:13:21 +0200 schrieb WM:
>> On 06.10.2024 17:55, joes wrote:
>>> Am Sun, 06 Oct 2024 17:26:07 +0200 schrieb WM:
>>>> On 06.10.2024 16:52, Alan Mackenzie wrote:
>>>>> WM <wolfgang.mueckenheim@tha.de> wrote:
> 
>>>>> This idea of time may be what misleads the mathematically less adept
>>>>> into believing that 0.999... < 1.
>>>> That is true even in actual infinity.
>>>> We can add 9 to 0.999...999 to obtain 9.999...999. But multiplying
>>>> 0.999...999 by 10 or, what is the same, shifting the digits 9 by one
>>>> step to the left-hand side, does not increase their number but leaves
>>>> it constant: 9.99...9990.
>>>> 10*0.999...999 = 9.99...9990 = 9 + 0.99...9990 < 9 + 0.999...999 ==>
>>>> 9*0.999...999 < 9 as it should be.
>>> In actual infinity, there is no last 9 (that would not be infinite).
>> Actual means all, but not more. This implies a last before ω. The
>> infinity means an end cannot be determined. It is produced by the dark
>> numbers.
> Actually infinite means infinite, which doesn’t change when you add or
> subtract a finite number.
> 

Actual infinity doesn't exist for us finite beings.