The otherday, I realized that slugging a string is a projection ! It's a surjective map with a reduction of dimensions (aka I give you a slug and in nearly all

The otherday, I realized that slugging a string is a projection ! It's a surjective map with a reduction of dimensions (aka I give you a slug and in nearly all cases you won't be able to find the original string), and is idempotent, that is, the slug of a slug is itself. As is, this realization is completely useless since I don't really have any useful way to apply it, but it's a fun way of looking at slugs. And while we're at it, we can also see that there is a reduction of dimension in the process of hashing but that it is not a projection since the hash of a hash generally isn't itself. I'm almost sure about what I just said (I'm not a mathematician), but please correct me if I'm wrong !