(adsbygoogle = window.adsbygoogle || []).push({}); From Herstein's Abstract Algebra. Section 2.7 #7

If φ is a homomorphism of G onto G' and N ◅ G, show that φ(N) ◅ G.

Attempt:

I want to prove that if k ∈ G' then kφ(N)k^{-1}= φ(N), but k = φ(n) for some n... then idk what.

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# Herstein: Homomorphism Proof

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