theorem instCoeDepTypeRoleOfIs._proof_1
theorem instCoeDepTypeRoleOfIs._proof_1: ∀ (x : Type) [qszr71sj.Role.Is x], qszr71sj.Role.Is x
theorem instCoeDepTypeRoleOfIs._proof_1
theorem instCoeDepTypeRoleOfIs._proof_1: ∀ (x : Type) [qszr71sj.Role.Is x], qszr71sj.Role.Is x