Proofgold Proof

pf
Let x0 of type ι be given. Let x1 of type ι → ι → ο be given. Assume H0: x1 4a7ef.. x0. Assume H1: ∀ x2 . ba9d8.. x2 ⟶ ∀ x3 . x1 x2 x3 ⟶ x1 (4ae4a.. x2) (prim3 x3). The subproof is completed by applying H0. ■