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In mathematics, particularly category theory, a representable functor is a certain functor from an arbitrary category into the category of sets. Such functors give representations of an abstract category in terms of known structures (i.e. sets and functions) allowing one to utilize, as much as possible, knowledge about the category of sets in other settings.
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functor set category representable displaystyle represented functors hom universal object sets natural function unique isomorphism element may forgetful space elements
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Representable functor | is a | certain functor from an arbitrary category into the category of sets | 0.90 | text |
| stacks | instance of | non-representable functors may be described by more complicated structures | 0.80 | text |
| Representable functor | related to Preservation of limits | Representable | 0.60 | section |
| Representable functor | related to Preservation of limits | Hom | 0.60 | section |
| Representable functor | related to Preservation of limits | In | 0.60 | section |
| Representable functor | related to Preservation of limits | It | 0.60 | section |
| Representable functor | related to Preservation of limits | Contravariant | 0.60 | section |
| Representable functor | related to Relation to universal morphisms and adjoints | The | 0.60 | section |
| Representable functor | related to Relation to universal morphisms and adjoints | Let | 0.60 | section |
| Representable functor | related to Relation to universal morphisms and adjoints | Then | 0.60 | section |
| Representable functor | related to Relation to universal morphisms and adjoints | HomC | 0.60 | section |
| Representable functor | related to Relation to universal morphisms and adjoints | Set | 0.60 | section |
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