If A and B are countably infinite, is countably infinite?
I'm working on this problem with my friend and we know that with countably infinite sets there is a bijection of each of the sets however we are not sure where to go from there.
If A and B are countably infinite, is countably infinite?
I'm working on this problem with my friend and we know that with countably infinite sets there is a bijection of each of the sets however we are not sure where to go from there.
It does not have to be for
let the odd integers and the even integers
both of these are countably infinite what does this say?