Question: Determine whether the given map is an isomorphism of the first binary structure with the second. If it is not an isomorphism, why not?

Determine whether the given map ∅ is an isomorphism of the first binary structure with the second. If it is not an isomorphism, why not?

(Z, +) with (Z, +) where ∅(n) = -n for n ∈ Z

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