| λ x0 : ι → ι → ο . λ x1 x2 x3 x4 . ∀ x5 : ο . ((x1 = x2 ⟶ ∀ x6 : ο . x6) ⟶ (x1 = x3 ⟶ ∀ x6 : ο . x6) ⟶ (x2 = x3 ⟶ ∀ x6 : ο . x6) ⟶ (x1 = x4 ⟶ ∀ x6 : ο . x6) ⟶ (x2 = x4 ⟶ ∀ x6 : ο . x6) ⟶ (x3 = x4 ⟶ ∀ x6 : ο . x6) ⟶ not (x0 x1 x2) ⟶ x0 x1 x3 ⟶ x0 x2 x3 ⟶ x0 x1 x4 ⟶ x0 x2 x4 ⟶ not (x0 x3 x4) ⟶ x5) ⟶ x5 |
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| (ι → ι → ο) → ι → ι → ι → ι → ο |
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