theorem instContinuantFiatBoundaryIsToParent
theorem instContinuantFiatBoundaryIsToParent: ∀ (x : Type) [ContinuantFiatBoundary.Is x], ImmaterialEntity.Is x
theorem instContinuantFiatBoundaryIsToParent
theorem instContinuantFiatBoundaryIsToParent: ∀ (x : Type) [ContinuantFiatBoundary.Is x], ImmaterialEntity.Is x