Re: The set of necessary FISONs

Am Sun, 23 Feb 2025 11:04:09 +0100 schrieb WM:

On 22.02.2025 19:21, joes wrote:

Am Sat, 22 Feb 2025 19:02:12 +0100 schrieb WM:

 

If every FISON can be omitted, then nothing remains for a sufficient
set.
Because if there was any sufficient set, it would have a first FISON.

Haven't you agreed that omitting everything does change the union?

Omitting everything does change the real union but not the assumed
union.

OMFG. Nobody is saying that the union of the elements of the empty set
were N.

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Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math:
It is not guaranteed that n+1 exists for every n.