| i→n(i0) + n = n0 + # ar, i→n(i0) + i→n(i1) = n0 % # ar + # ar, n0 % # ar < n0, 0 ≤ (i0 + i1) % n→i(# ar), 0 ≤ i0, i1 ≤ n→i(# ar), i0 < n→i(# ar), inv(mk(ar, n→i(# ar), i0, i1)), i1 < n→i(# ar), inv(mk(ar[n0 % # ar, a], n→i(# ar), i0, i1 + 1)), 0 ≤ i0 + i1, n < i→n(i1), 0 < i1, n0 % # ar < # ar, n0 % # ar < n0 + # ar, # ar ≤ n0 ⊦ ar[n0 % # ar] = a, # ar = 1, i1 = 0, i→n(i0) ≤ # ar ∧ n < # ar |
0 ≤ i ⊦ ((* i)) < n→i(n) ↔ i→n(i) < n
0 ≤ i0, i→n(i0) + n = n0 + # ar, i→n(i0) + i→n(i1) = n0 % # ar + # ar, n0 % # ar < n0, 0 ≤ (i0 + i1) % n→i(# ar), 0 ≤ i0, i1 ≤ n→i(# ar), i→n(i0) < # ar, inv(mk(ar, n→i(# ar), i0, i1)), i1 < n→i(# ar), inv(mk(ar[n0 % # ar, a], n→i(# ar), i0, i1 + 1)), 0 ≤ i0 + i1, n < i→n(i1), 0 < i1, n0 % # ar < # ar, n0 % # ar < n0 + # ar, # ar ≤ n0 ⊦ ar[n0 % # ar] = a, # ar = 1, i1 = 0, i→n(i0) ≤ # ar ∧ n < # ar
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (# ar, i0)]]