Outer Automorphism Group

A particular type of automorphism group which exists only for groups. For a group G, the outer automorphism group is the quotient group Aut(G)/Inn(G), which is the automorphism group of G modulo its inner automorphism group.

See also

Automorphism Group, Inner Automorphism Group, Quotient Group

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Cite this as:

Weisstein, Eric W. "Outer Automorphism Group." From MathWorld--A Wolfram Web Resource.

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