| is_fskey(fv .1) ∧ fv .1 .fs .class ≠ class1, r ∈ st, ∀ r, st, class1. r ∈ st → r ∈ addclass(class1, fis0, st) ⊦ r ∈ addclass(class1, fis0, st) |
r ∈ st, is_fskey(fv .1), ∀ r, st, class1. r ∈ st → r ∈ addclass(class1, fis0, st) ⊦ fv .1 .fs .class = class1, r ∈ addclass(class1, fis0, st)
[[CONCRETESIMPRULES : ()]]