FUNCTORS
13
Scrabble
16
WWF
F(4) U(1) N(1) C(3) T(1) O(1) R(1) S(1)
NWL/TWL ✓ Collins ✓ WWF ✓
Definition
noun
- (grammar) A function word.
- A function object.
- A category homomorphism; a morphism from a source category to a target category which maps objects to objects and arrows to arrows, in such a way as to preserve domains and codomains (of the arrows) as well as composition and identities.“In the category of categories, \mathbb{CAT}, the objects are categories and the morphisms are functors.”
Source: Wiktionary
