Let x0 of type ι be given.

Let x1 of type ι → ο be given.

Let x2 of type ι be given.

Apply unknownprop_7ba3c7fc1a64bc4a0aeed47bd1963f341f970e973cdb65321de4855f8cb88623 with x0, x1, x2, prim1 x2 (1216a.. x0 (λ x3 . x1 x3)) ⟶ and (prim1 x2 x0) (x1 x2).

Assume H0: prim1 x2 (1216a.. x0 x1) ⟶ and (prim1 x2 x0) (x1 x2).

Assume H1: and (prim1 x2 x0) (x1 x2) ⟶ prim1 x2 (1216a.. x0 x1).

The subproof is completed by applying H0.

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Proofgold Proof