theorem instCoeDepTypeMammalOfIs._proof_1
theorem instCoeDepTypeMammalOfIs._proof_1: ∀ (x : Type) [jh3kw4vp.Mammal.Is x], jh3kw4vp.Mammal.Is x
theorem instCoeDepTypeMammalOfIs._proof_1
theorem instCoeDepTypeMammalOfIs._proof_1: ∀ (x : Type) [jh3kw4vp.Mammal.Is x], jh3kw4vp.Mammal.Is x