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916823d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | import Mathlib
open CategoryTheory Limits
variable {C : Type u} [SmallCategory C]
variable {D : Type u} [SmallCategory D]
variable (F G : C ⥤ D)
def homIntegrandBifunctor : Cᵒᵖ × C ⥤ Type u :=
(Functor.prod F.op G) ⋙ (Functor.hom D)
theorem natTransIsoEnd :
Nonempty (NatTrans F G ≅ end_ (curryObj (homIntegrandBifunctor F G))) := by
sorry
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