| (((r => a0 × null * del-list(rx0, n - 1)) * P))(H), 1 ≤ n ⊦ n = 0, r = null, ((del-list(rx0, n - 1) * P))(H -- r) |
n = m + 1, (((r => a0 × null * del-list(rx0, m)) * P))(H), 1 ≤ n ⊦ n = 0, r = null, ((del-list(rx0, m) * P))(H -- r)
Used simplifier rules: n ≠ 0 ⊦ m = n - 1 ↔ n = m + 1; (elim) Used terms: n, m