theorem instCoeFiatLineContinuantFiatBoundary._proof_1
theorem instCoeFiatLineContinuantFiatBoundary._proof_1: ∀ (v : ta3nj1a4.FiatLine), ta3nj1a4.ContinuantFiatBoundary.Is (Subtype.val v)
theorem instCoeFiatLineContinuantFiatBoundary._proof_1
theorem instCoeFiatLineContinuantFiatBoundary._proof_1: ∀ (v : ta3nj1a4.FiatLine), ta3nj1a4.ContinuantFiatBoundary.Is (Subtype.val v)