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Proofgold Proof

pf
Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Let x3 of type ι be given.
Assume H0: prim0 x0 x1 = prim0 x2 x3.
Apply unknownprop_f4ff16b9b21fb43bec0dd0d2e94569d632f3d21b75932b9bcc0c1ffd4c0d62b6 with x0, x1, x2, x3, x0 = x2 leaving 2 subgoals.
The subproof is completed by applying H0.
Assume H1: x0 = x2.
Assume H2: x1 = x3.
The subproof is completed by applying H1.