I have to prove that $\displaystyle \mathbb{N}^\mathbb{N}$is denumberable; hence, if I understood it right, The set of all mappings from $\displaystyle \mathbb{N}$ to $\displaystyle \mathbb{N}$..

We worked with these 0,1 tables, which I can work with if I get a mapping, but not if it should work forallmappings.

Could you help me?