On the set NN mn m n non negative integers define the rel

On the set N*N = {(m,n) : m, n non - negative integers} define the relation approximately by (m, n) approximately (k,l)

Solution

As N means natural numbers that is all positive integers means zero is also excluded

So the relation (m,n) ~ (k,l)

Means that for every non negative integer m,n there will similar numbers in NxN excluding zero.