Compute the indicated quantities for the given homomorphism. Ker() and (4, 6) for : Z x Z
Question:
Compute the indicated quantities for the given homomorphism¢.
Ker(∅) and ∅(4, 6) for∅ : Z x Z → Z x Z where ∅(1, 0) = (2, -3) and ∅(0, 1) = (-1, 5)
Data from Exercise 46
Let a group G be generated by { ai | i ∈ I}, where I is some indexing set and ai ∈ G for all i ∈ I. Let ∅ : G → G' and µ : G → G' be two homomorphisms from G into a group G', such that ∅(ai) = µ(ai) for every i ∈ I. Prove that ∅ = µ. [Thus, for example, a homomorphism of a cyclic group is completely determined by its value on a generator of the group.]
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