Covariance and contravariance
From Includipedia, the inclusionist encyclopedia
(Redirected from Contravariant)
Covariance and contravariance may refer to:
- Covariance and contravariance of vectors, in mathematics and theoretical physics
- Covariance and contravariance of functors, in category theory
- Covariance and contravariance (computer science), whether a type system preserves the ordering ≤ of types
[edit] See also
- Covariance, in probability theory and statistics, the measure of how much two random variables vary together
