noun
contravariance
Technical term in mathematics, specifically in category theory and related fields, referring to a property of functors that reverse the direction of morphisms.
See also: 反変 (はんぺん)
反変性は、関手が射の向きを逆にする性質を指す。
Contravariance refers to the property of a functor that reverses the direction of morphisms.
反変 is a shorter form often used as a prefix or in compounds, while 反変性 explicitly nominalizes the property.
Compound of 反 (counter-, anti-) + 変 (change, transformation) + 性 (-ness, property). The term is a direct translation of the English mathematical term 'contravariance'.