theorem instCoeDepTypeIdeaOfIs._proof_1
theorem instCoeDepTypeIdeaOfIs._proof_1: ∀ (x : Type) [r9rskb25.Idea.Is x], r9rskb25.Idea.Is x
theorem instCoeDepTypeIdeaOfIs._proof_1
theorem instCoeDepTypeIdeaOfIs._proof_1: ∀ (x : Type) [r9rskb25.Idea.Is x], r9rskb25.Idea.Is x