⊦ stutf(nσ) ∧ ⌜n⌝ + ⌜1⌝ < leninv(nσ) → inv(nσ)[n] < inv(nσ)[n + 1]
Used simplifier rules: ⊦ m < n ↔ ¬ n ≤ m; (ss) Used terms: n, nσ