| ∀ r, class1, st, sk, val. (addobj(r, class1, fis0, st)[r -- sk, val]) = addobj(r, class1, fis0[sk, val], st) ⊦ sk = sk0, (addobj(r, class1, fis0, st)[r -- sk, val][r -- sk0, val0]) = (addobj(r, class1, fis0[sk, val], st)[r -- sk0, val0]) |
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r, class1, st, sk, val)]]