theorem instCoeDepTypeContinuantFiatBoundaryOfIs._proof_1
theorem instCoeDepTypeContinuantFiatBoundaryOfIs._proof_1: ∀ (x : Type) [d4qbfhxh.ContinuantFiatBoundary.Is x], d4qbfhxh.ContinuantFiatBoundary.Is x
theorem instCoeDepTypeContinuantFiatBoundaryOfIs._proof_1
theorem instCoeDepTypeContinuantFiatBoundaryOfIs._proof_1: ∀ (x : Type) [d4qbfhxh.ContinuantFiatBoundary.Is x], d4qbfhxh.ContinuantFiatBoundary.Is x