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On 09.11.2024 23:01, Moebius wrote:Did you know that Cantor pairing can turn any natural number into a _unique_ pair of natural numbers? This unique pair can be turned back into the original natural number. It's a mapping at its essence. Actually, it can be used for hashing, anyway...
It confirms only that both sets have the same size, actually aleph_0.True but irrelevant. For covering of all rationals by all naturals there must be the same reality, but that is not.
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