Proofgold Proof

pf
Let x0 of type ι be given. Let x1 of type ι be given. Let x2 of type ι be given. Assume H0: prim1 x2 (d3786.. x0 x1). Apply unknownprop_78dd4d18930f8cdb1d353eca6deb6db797599b58a01b747c9a28b7030299025c with x0, λ x3 . prim1 x3 x1, x2. The subproof is completed by applying H0. ■