Re: The set of necessary FISONs

On 20.02.2025 03:23, Richard Damon wrote:

On 2/19/25 11:57 AM, WM wrote:

Note, your subject line uses the word you mean, "necessary", but you ignore the fact that a set of necessary elements doesn't need to exist.

Assume a set of sufficient FISONs. |ℕ \ {1, 2, 3, ..., n}| = ℵo is true for all FISONs. That contradicts the assumption.
Regards, WM