| fv = sk0 × val0, ∀ r, class1, sk, val, fis0, st. addobj(r, class1, fis1 + (sk × val) ' + fis0, st) = (addobj(r, class1, fis1 + fis0, st)[r -- sk, val]) ∨ sk ∈ fis1 ⊦ (addobj(r, class1, fis1 + (sk × val) ' + fis0, st)[r -- sk0, val0]) = (addobj(r, class1, fis1 + fis0, st)[r -- sk0, val0][r -- sk, val]), sk ∈ fv ', sk ∈ fis1 |
∀ r, class1, sk, val, fis0, st. addobj(r, class1, fis1 + (sk × val) ' + fis0, st) = (addobj(r, class1, fis1 + fis0, st)[r -- sk, val]) ∨ sk ∈ fis1 ⊦ (addobj(r, class1, fis1 + (sk × val) ' + fis0, st)[r -- sk0, val0]) = (addobj(r, class1, fis1 + fis0, st)[r -- sk0, val0][r -- sk, val]), sk = sk0, sk ∈ fis1
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ sk ∈ (sk0 × val) ' ↔ sk = sk0])]]