/sci/ - Science & Math

>>12124908
I tried to dig a bit but didn't really find anything hard. The idea is discussed, but e.g. that paper in pic related doesn't tell us too much about the hierarchy level

>>12124908
If you're just interested in natural numbers, you can find the quickest one here
https://en.wikipedia.org/wiki/Pairing_function

If you want to map between lists, you can iterate it.
You can also move between N and the set of all finite length lists of elements of N, see
https://youtu.be/soHBNEJlzL0

In fact, if you want to be invertible and implement it, I'd use that modular arithmetic instead of some root taking