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On 28.12.2024 06:23, Moebius wrote:That is the case.No. If so, then the union of all FISONs would contain all n.On 12/17/24 4:51 PM, WM wrote:Hint: For each and every n e IN there is a FISON such that n is in it.all FISONs contain/are all n.
But fact isNo. There are infinitely many, so the union must be infinite too.
that the union of all FISONs is a FISON (all FISONs have infinitely many
successors) and leaves almost all numbers outside ∀n ∈ ℕ_def: |ℕ \ {1,
2, 3, ..., n}| = ℵo.
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