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   IA automorphism
   In mathematics, in the realm of group theory, an IA automorphism of a group is an automorphism that acts as identity on the abelianization. The abelianization of a group is its quotient by its commutator subgroup. An IA automorphism is thus an automorphism that sends each coset of the commutator su...
   Found op http://en.wikipedia.org/wiki/IA_automorphism
   
   

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