Re: The set of necessary FISONs

On 09.03.2025 17:26, Jim Burns wrote:

You even avoid hearing what we mean.
 

I am interested in the difference that you see between
Z₀ defined by { } ∈ Z₀, and if {{{...{{{ }}}...}}} with n curly brackets ∈ Z₀ then {{{...{{{ }}}...}}} with n+1 curly brackets ∈ Z₀
and
The set of FISONs failing to have the union ℕ defied by induction:
|ℕ \ {1}| = ℵo, and if |ℕ \ {1, 2, 3, ..., n}| = ℵo
then |ℕ \ {1, 2, 3, ..., n+1}| = ℵo.
Regards, WM