A functor is called contravariant if it reverses the directions of arrows, i.e., every arrow is mapped to an arrow .

# Contravariant Functor

## 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. https://mathworld.wolfram.com/ContravariantFunctor.html