| ∀ r, i, class, fis, st. addarray(r, vals0, i, addclass(class, fis, st)) = addclass(class, fis, addarray(r, vals0, i, st)) ⊦ (addarray(r, vals0, i + 1, addclass(class, fis, st))[r -- i ', val]) = (addclass(class, fis, addarray(r, vals0, i + 1, st))[r -- i ', val]) |
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i + j = j + i])], [EXTRATERMS : (r, i + 1, class, fis, st)]]