theorem instCoeDepTypeQualityOfIs._proof_1
theorem instCoeDepTypeQualityOfIs._proof_1: ∀ (x : Type) [qszr71sj.Quality.Is x], qszr71sj.Quality.Is x
theorem instCoeDepTypeQualityOfIs._proof_1
theorem instCoeDepTypeQualityOfIs._proof_1: ∀ (x : Type) [qszr71sj.Quality.Is x], qszr71sj.Quality.Is x