Re: The set of necessary FISONs

On 22.02.2025 19:46, joes wrote:

Am Sat, 22 Feb 2025 19:32:16 +0100 schrieb WM:

All FISONs have an actually infinite set of dark numbers as successors:
∀n ∈ U(F): |ℕ \ {1, 2, 3, ..., n}| = ℵo. This set differs for every
FISON but is not less than ℵo for any FISON.

So why is the union of inf. many FISONs finite?

There are only (potentially in-) finitely many FISONs. Therefore their union is (potentially in-) finite too.
Regards, WM