| ⊦ (addobj(r, class1, fis, st)[r -- sk, val]) = addobj(r, class1, (sk × val) ' + fis, st) |
⊦ addobj(r, class1, (sk × val) ' + fis, st) = (addobj(r, class1, fis, st)[r -- sk, val])
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (fis + fis0) + fis1 = fis + fis0 + fis1])]]