Proofgold Proof

pf
Let x0 of type ι be given. Let x1 of type ι → ο be given. Apply unknownprop_b5b40437e935f31cf58fbd54d210db6d9511f5725ff38cf68a23d652f4a0bd1d with 81bb1.. x0 x1, x0, x1. Let x2 of type ι → ι → ο be given. Assume H0: x2 (81bb1.. x0 x1) (81bb1.. x0 x1). The subproof is completed by applying H0. ■