Let G and G' be groups. (a) If p: G → G' is a function, what is required for p to be a homomorphism? (b) Prove that if p : G → G' is an injective homomorphism and a e G, then |p(a)| = |a| %3D

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Let G and G' be groups.
(a) If p: G → G' is a function, what is required for p to be a homomorphism?
(b) Prove that if p : G → G' is an injective homomorphism and a e G, then |p(a)| = |a|
%3D
Transcribed Image Text:Let G and G' be groups. (a) If p: G → G' is a function, what is required for p to be a homomorphism? (b) Prove that if p : G → G' is an injective homomorphism and a e G, then |p(a)| = |a| %3D
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