theorem instCoeDepTypeDispositionOfIs._proof_1
theorem instCoeDepTypeDispositionOfIs._proof_1: ∀ (x : Type) [ta3nj1a4.Disposition.Is x], ta3nj1a4.Disposition.Is x
theorem instCoeDepTypeDispositionOfIs._proof_1
theorem instCoeDepTypeDispositionOfIs._proof_1: ∀ (x : Type) [ta3nj1a4.Disposition.Is x], ta3nj1a4.Disposition.Is x