| ∀ x0 . ∀ x1 x2 x3 x4 : ι → ι → ι . ∀ x5 x6 : ι → ι → ο . ∀ x7 . (∀ x8 . x8 ∈ x0 ⟶ ∀ x9 . x9 ∈ x0 ⟶ x1 x8 x9 = x2 x8 x9) ⟶ (∀ x8 . x8 ∈ x0 ⟶ ∀ x9 . x9 ∈ x0 ⟶ x3 x8 x9 = x4 x8 x9) ⟶ (∀ x8 . x8 ∈ x0 ⟶ ∀ x9 . x9 ∈ x0 ⟶ iff (x5 x8 x9) (x6 x8 x9)) ⟶ pack_b_b_r_e x0 x1 x3 x5 x7 = pack_b_b_r_e x0 x2 x4 x6 x7 |
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