theorem instCoeFiatLineContinuantFiatBoundary._proof_1
theorem instCoeFiatLineContinuantFiatBoundary._proof_1: ∀ (v : d4qbfhxh.FiatLine), d4qbfhxh.ContinuantFiatBoundary.Is (Subtype.val v)
theorem instCoeFiatLineContinuantFiatBoundary._proof_1
theorem instCoeFiatLineContinuantFiatBoundary._proof_1: ∀ (v : d4qbfhxh.FiatLine), d4qbfhxh.ContinuantFiatBoundary.Is (Subtype.val v)