theorem instCoeDepTypeDispositionOfIs._proof_1
theorem instCoeDepTypeDispositionOfIs._proof_1: ∀ (x : Type) [d4qbfhxh.Disposition.Is x], d4qbfhxh.Disposition.Is x
theorem instCoeDepTypeDispositionOfIs._proof_1
theorem instCoeDepTypeDispositionOfIs._proof_1: ∀ (x : Type) [d4qbfhxh.Disposition.Is x], d4qbfhxh.Disposition.Is x