| ⊦ ints = [], min(i ' + ints) = min(i, min(ints)) |
⊦ ints ≠ [] → min(ints) ∈ ints ∧ (∀ i. i ∈ ints → min(ints) ≤ i)
i + ints ≠ [] → min(i + ints) ∈ i + ints ∧ (∀ i0. i0 ∈ i + ints → min(i + ints) ≤ i0) ⊦ ints = [], min(i ' + ints) = min(i, min(ints))
Used terms: i + ints