Sujet : Re: How many different unit fractions are lessorequal than all unit fractions? (infinitary)
De : wolfgang.mueckenheim (at) *nospam* tha.de (WM)
Groupes : sci.mathDate : 16. Oct 2024, 09:19:55
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vensvb$2533b$2@dont-email.me>
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On 15.10.2024 22:22, Ross Finlayson wrote:
"countable cardinality" is so dirt-obvious
that it should go without saying,
And it is disproved by aa general truth: When doubling natural numbers we obtain natural numbers which have not been doubled.
In potential infinity we obtain more even natural numbers than have been doubled.
In actual infinity we double ℕ and obtain neither ℕ or a subset of ℕ.
Regards, WM