- #1
mikky05v
- 53
- 0
this isn't a homework problem it's just something our professor mentioned today that he didn't know how to do and I was curious.
How would you go about proving that there is a 1 : 1 correspondence between the set of positive integers and the set of positive rationals.
I think it would have something to do with countability and i remember something about using diagonal lines with countability but it was a few semesters ago and I can't find my notes to tell if that's even the right direction.
Looking for pointers or even online resources about how you would prove this and the theory behind it. thanks a bunch :)
How would you go about proving that there is a 1 : 1 correspondence between the set of positive integers and the set of positive rationals.
I think it would have something to do with countability and i remember something about using diagonal lines with countability but it was a few semesters ago and I can't find my notes to tell if that's even the right direction.
Looking for pointers or even online resources about how you would prove this and the theory behind it. thanks a bunch :)