theorem instCoeDepTypeImmaterialEntityOfIs._proof_1
theorem instCoeDepTypeImmaterialEntityOfIs._proof_1: ∀ (x : Type) [qszr71sj.ImmaterialEntity.Is x], qszr71sj.ImmaterialEntity.Is x
theorem instCoeDepTypeImmaterialEntityOfIs._proof_1
theorem instCoeDepTypeImmaterialEntityOfIs._proof_1: ∀ (x : Type) [qszr71sj.ImmaterialEntity.Is x], qszr71sj.ImmaterialEntity.Is x