| r ∈ st, ∀ r, st, class1. r ∈ st → r ∈ addclass(class1, fis0, st) ⊦ r ∈ addclass(class1, fv ' + fis0, st), fv .1 .fs .class ≠ class1 ∧ ¬ is_indexkey(fv .1) |
fv = sk × val, r ∈ st, ∀ r, st, class1. r ∈ st → r ∈ addclass(class1, fis0, st) ⊦ r ∈ addclass(class1, fv ' + fis0, st), sk .fs .class ≠ class1 ∧ ¬ is_indexkey(sk)
[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ sk = fv .1 ∧ val = fv .2 ↔ fv = sk × val])], [EXTRATERMS : (fv, sk, val)]]