Let x0 of type ι → (ι → ο) → ο be given.
Let x1 of type ι → (ι → ο) → ο be given.
Let x2 of type ι be given.
Apply PNo_bd_pred with
x0,
x1,
x2,
∀ x3 . x3 ∈ PNo_bd x0 x1 ⟶ ∀ x4 : ι → ο . not (PNo_strict_imv x0 x1 x3 x4) leaving 5 subgoals.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H2.
The subproof is completed by applying H3.
The subproof is completed by applying H5.