Contravariant Functor

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

See also

Covariant Functor, Functor, Hom

This entry contributed by Margherita Barile

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Weisstein, Eric W., with contributions by Margherita Barile. "Contravariant Functor." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ContravariantFunctor.html

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