noun
functor
Functor (noun) means a function word.
noun
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.
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.
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Etymology
From function, modeled after factor.
Frequently asked questions
What is the meaning of functor?
"functor" (noun) means a function word.
What are the different meanings of functor?
"functor" has 3 main meanings: 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.