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