Question: Theorem. Let 0 : G - H be a group homomorphism. Then I = im 0 is a subgroup of the codomain H. Note: When

Theorem. Let 0 : G - H be a group homomorphism. Then I = im 0 is a subgroup of the codomain H. Note: When referring to an identity element, you must write EG Or En, rather than just E. PROOF

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