theorem instCoeDepTypeMaterialEntityOfIs._proof_1
theorem instCoeDepTypeMaterialEntityOfIs._proof_1: ∀ (x : Type) [qszr71sj.MaterialEntity.Is x], qszr71sj.MaterialEntity.Is x
theorem instCoeDepTypeMaterialEntityOfIs._proof_1
theorem instCoeDepTypeMaterialEntityOfIs._proof_1: ∀ (x : Type) [qszr71sj.MaterialEntity.Is x], qszr71sj.MaterialEntity.Is x