| pos(a, x0) + 1 < # x0, m + 1 < # x0, a ∈ x0, pos(a, x0) ≤ m, ∀ n0, a1. n0 + 1 < # x0 ∧ a1 ∈ x0 → (x0 \ a1 ')[n0] = (n0 < pos(a1, x0) ⊃ x0[n0];x0[n0 + 1]) ⊦ (x0 \ a ')[m] = x0[m + 1], x0 = [], dups(x0), a0 ∈ x0 |
Used simplifier rules: ⊦ m ≤ n → (n < m ↔ false); (s) Used terms: m, a