English: This commutative diagram of group homomorphisms shows the map H/H' -> ~H/~H' between derived quotients, induced by an epimorphism H -> ~H, which possibly arises by restriction from a bigger group. The existence is due to the fact that ~H' is the image of H' under this epimophism. The horizontal maps are the canonical projections onto the quotients.
User:DanielConstantinMayer added png-file "Epimorphisms and derived quotients"
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Original upload log
The original description page was here. All following user names refer to en.wikipedia.