automorphism

[aw-tuh-mawr-fiz-uh m]
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noun Mathematics.

an isomorphism from a given set to itself.

Origin of automorphism

First recorded in 1870–75; auto-1 + morph- + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of automorphism