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