User talk:Ramanmu

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Cheers, prime.mover (talk)

Changes to Quotient Group Epimorphism is Epimorphism
I see your changes and I can't see the need for them. In this:

you got both implications from the $\iff$ which contains both $x \in N \implies x \in \ker \left({\phi}\right)$ and $x \in \ker \left({\phi}\right) \implies x \in N$ so there's no need to add another argument to show it going the other way. --prime mover 19:13, 12 December 2010 (UTC)