Contravariant Functor

A functor F is called contravariant if it reverses the directions of arrows, i.e., every arrow f:A-->B is mapped to an arrow F(f):F(B)-->F(A).

See also

Covariant Functor, Functor, Hom

This entry contributed by Margherita Barile

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Cite this as:

Barile, Margherita. "Contravariant Functor." From MathWorld--A Wolfram Web Resource, created by Eric W. Weisstein.

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