functor

名词 n.
中文释义
英 /ˈfʌŋktə/   

英文释义

名词 n.
  1. A function word.
  2. A function object.
  3. A category homomorphism; a morphism from a source category to a target category which maps objects to objects and arrows to arrows (either covariantly or contravariantly), in such a way as to preserve morphism composition and identities.
    — In the category of categories #92;mathbf#123;Cat#125; the objects are categories and the morphisms are functors.
  4. A structure allowing a function to apply within a generic type, in a way that is conceptually similar to a functor in category theory.

词形变化

functors plural

词汇关系

衍生词
adjoint functor anafunctor bifunctor contravariant functor faithful functor forgetful functor full functor functor category functorial group functor identity functor overfunctor profunctor pseudofunctor representable functor subfunctor underlying functor Yoneda functor

词源

From function, modeled after factor.
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