===== Automorphism =====
==== Collection ====
| @#55CCEE: context     | @#55CCEE: $A\in\mathrm{Ob}_{\bf C}$ |
| @#FF9944: definition  | @#FF9944: $A\cong A$ |

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=== Reference ===
Wikipedia: 
[[https://en.wikipedia.org/wiki/Isomorphism|Isomorphism]], 
[[https://en.wikipedia.org/wiki/Automorphism|Automorphism]]

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=== Subset of ===
[[Isomorphism]]