Canonical map

See also Natural transformation, a related concept in category theory.
For the canonical map of an algebraic variety into projective space, see Canonical bundle#Canonical maps.

In mathematics, a canonical map, also called a natural map, is a map or morphism between objects that arises naturally from the definition or the construction of the objects.

A closely related notion is a structure map or structure morphism; the map that comes with the given structure on the object. They are also sometimes called canonical maps.


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