Science Memes

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submitted 6 months ago by [email protected] to c/[email protected]

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[–] HexesofVexes 1 points 6 months ago (1 children)

On the contrary - to be countabley infinite is generally assumed to mean there exists a 1-1 correspondence with N. Though, I freely admit that another set could be used if you assumed it more primitive.

[–] [email protected] 2 points 6 months ago* (last edited 6 months ago) (1 children)

On the contrary - to be countabley infinite is generally assumed to mean there exists a 1-1 correspondence with N.

Isn't this what I just said? If I am not mistaken, this is exactly what "unique up-to bijection" means.

Anyways, I mean either starting from 1 or 0, they can be used to count in the exactly same way.

[–] HexesofVexes 2 points 6 months ago

I'm arguing from the standpoint that we establish the idea of counting using the naturals - it's countable if it maps to the naturals, thus the link. Apologies for the lack of clarity.