| 0 ≤ i ∧ i < i0 + j + 1, 0 ≤ i0, 0 ≤ i0 + j, 0 < j ⊦ j = 0, initial_value(ty) = (addarray(r, ty, mklist(initial_value(ty), i→n(j)) + val ' + mklist(initial_value(ty), i→n(i0)), st)[r -- i ']), i = j |
0 ≤ i0, 0 ≤ i0 + j, 0 < j, i ≤ i0 + j, 0 ≤ i ⊦ j = 0, initial_value(ty) = (addarray(r, ty, mklist(initial_value(ty), i→n(j)) + val ' + mklist(initial_value(ty), i→n(i0)), st)[r -- i ']), i = j
[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j], [CSIMPSEQ : ⊦ i + j = j + i], [CSIMPSEQ : ⊦ i + j + i0 = (i + j) + i0], [CSIMPSEQ : ⊦ i < j + 1 ↔ i ≤ j])]]