| ∀ x0 : ι → (ι → ι) → (ι → ι) → ι → ι . ∀ x1 . ∀ x2 x3 : ι → ι . ∀ x4 . (∀ x5 : ι → ι . (∀ x6 . x6 ∈ x1 ⟶ x2 x6 = x5 x6) ⟶ ∀ x6 : ι → ι . (∀ x7 . x7 ∈ x1 ⟶ x3 x7 = x6 x7) ⟶ x0 x1 x5 x6 x4 = x0 x1 x2 x3 x4) ⟶ unpack_u_u_e_i (pack_u_u_e x1 x2 x3 x4) x0 = x0 x1 x2 x3 x4 |
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