fact: Definition cancelR_ooextendable {A B C : Type} (P : C -> Type) (f : A -> B) (g : B -> C) : ooExtendableAlong f (fun b => P (g b)) -> ooExtendableAlong (g o f) P -> ooExtendableAlong g P := fun extf extgf n => cancelR_extendable n P f g (extf n.+1) (extgf n).
imports: HoTT.Basics HoTT.Types Equiv.PathSplit PathAny Cubical.DPath Cubical.DPathSquare Colimits.Coeq Colimits.MappingCylinder