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Le 14/05/2024 à 16:15, FromTheRafters a écrit :Ah ja: (a) It is precisely the same. (b) But if it is not the same, then <bla>WM expressed precisely :It is precisely the same. And if you disagree replace "removing" by "constructing a difference set".Le 14/05/2024 à 00:47, FromTheRafters a écrit :>WM expressed precisely :>Le 10/05/2024 à 17:00, FromTheRafters a écrit :>WM explained :>>Yes. But every n ∈ ℕ_def has ℵ₀ successors which never vanish by counting. They can be removed only collectively such that nothing of ℕ remains.>
Wrong,
Try to remove all natural numbers individually from ℕ. Fail.
Because you cannot remove them -- *SETS DO NOT CHANGE*.
But the result of subtraction can be calculated. That is understood by removing.
That is not quite the same as constructing a difference set.
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