If A and B are both countably infinite then prove that is countably inifinite.

I was working on this problem with a friend and we know that this means that there is a bijection of both sets, but where do we go from there?

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- March 22nd 2011, 07:15 PMandirc5192Union of Two countably infinite sets
If A and B are both countably infinite then prove that is countably inifinite.

I was working on this problem with a friend and we know that this means that there is a bijection of both sets, but where do we go from there? - March 22nd 2011, 07:25 PMTheEmptySet