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Contravariance

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Translation of "contravariance" into Russian

contravariance
Noun
raiting
contravariance
contravariances pl
In category theory, contravariance is a property of a functor.
В теории категорий контравариантность является свойством функторов.

Definitions

contravariance
Noun
raiting
(mathematics, computing) The property of reversing the usual direction of variation, mapping, or substitution—for example, a type parameter that may be replaced by a supertype or a function that reverses morphisms.
Contravariance in C# delegates lets a method parameter accept instances of a base class instead of a derived class.
(tensor analysis) The characteristic of a vector or tensor component that changes inversely to a change of coordinate basis.
The contravariance of the tangent vector maintains the scalar product under coordinate transformations.