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Subject: Re: Some results about unit fractions
From: WM <askasker48@gmail.com>
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Xref: csiph.com sci.logic:255122

Jim Burns schrieb am Sonntag, 2. Juli 2023 um 00:49:57 UTC+2:

> Essentially,=20
> "visible" =3D=3D "finitely accessible"=20

Yes, for natural numbers this is true. There exists a FISON (in principle, =
not necessarily in our universe). Example 10^10^100 or Graham's number.
>=20
> There are many ways to describe "finite".=20
> I have been leaning heavily on=20
> | (Paul St=C3=A4ckel) S can be given a total=20
> | ordering which is well-ordered both forwards=20
> | and backwards.

Also true.

Regards, WM