theorem instCoeDepTypeFiatObjectPartOfIs._proof_1
theorem instCoeDepTypeFiatObjectPartOfIs._proof_1: ∀ (x : Type) [d4qbfhxh.FiatObjectPart.Is x], d4qbfhxh.FiatObjectPart.Is x
theorem instCoeDepTypeFiatObjectPartOfIs._proof_1
theorem instCoeDepTypeFiatObjectPartOfIs._proof_1: ∀ (x : Type) [d4qbfhxh.FiatObjectPart.Is x], d4qbfhxh.FiatObjectPart.Is x