Automorphism

From Citizendium
Revision as of 16:50, 14 November 2008 by imported>Richard Pinch (new entry, just a placeholder really)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

In algebra, an automorphism of an abstract algebraic structure is an isomorphism of the structure with itself, that is, a permutation of the underlying set which respects all algebraic operations.

The automorphisms typically form a group, the automorphism group of the structure.