| ∀ x0 x1 . ∀ x2 x3 : ι → ι → ι . ∀ x4 x5 . (∀ x6 . x6 ∈ SNoS_ (SNoLev x0) ⟶ ∀ x7 . SNo x7 ⟶ x2 x6 x7 = x3 x6 x7) ⟶ SNo x5 ⟶ x2 x4 x1 = x3 x4 x1 ⟶ x2 x0 x5 = x3 x0 x5 ⟶ x2 x4 x5 = x3 x4 x5 ⟶ add_SNo (x2 x4 x1) (add_SNo (x2 x0 x5) (minus_SNo (x2 x4 x5))) = add_SNo (x3 x4 x1) (add_SNo (x3 x0 x5) (minus_SNo (x3 x4 x5))) |
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