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From: FromTheRafters <FTR@nomail.afraid.org>
Newsgroups: sci.math
Subject: Re: How many different unit fractions are lessorequal than all unit fractions?
Date: Thu, 12 Sep 2024 08:29:52 -0400
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After serious thinking WM wrote :
> Le 11/09/2024 � 23:13, FromTheRafters a �crit :
>> Chris M. Thomasson laid this down on his screen :
>>> On 9/11/2024 12:40 PM, WM wrote:
>
>>>> Open intervals are intervals which have dark endpoints.
>>>
>>> What about the gray ones?
>>>
> Grey points are dark points which can become visible.

Points which change? What function causes a point to change?

> But the endpoints of open intervals will remain dark forever.

Open intervals simply don't contain endpoints, dark or otherwise.