| ⌜m⌝ < n∞, ⌜m⌝ < # σ ⊦ (σ to∞ n∞) to m = σ to m, # σ < n∞ |
Used simplifier rules: toinf-inf: ⊦ σ to∞ ∞ = σ;%toinf-fin: ⊦ σ to∞ ⌜n⌝ = σ to n;%to-to-ls: ¬ # σ < ⌜n⌝ ⊦ m < n → σ to n to m = σ to m;%natinf freely generated by ∞, ⌜ ⌝;;%less-fin: ⊦ ⌜m⌝ < ⌜n⌝ ↔ m < n; from specification nat-inf