Endomorphism
From Wikipedia, the free encyclopedia.

An endomorphism is a homomorphism from a mathematical object to itself. It is termed an automorphism if it is also an isomorphism.

     auto-
   /       \\
  /         \\
endo-      iso-  morphism
  \\         /
   \\       /
     homo-

The original article can be found at: http://en.wikipedia.org/wiki/Endomorphism.
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