| is_fskey(sk), ∀ r, class, st. r = jvmref ∨ getbytearray(r, addclass(class, fis0, st)) = getbytearray(r, st) ⊦ getbytearray(r, addclass(sk .fs .class, (sk × val) ' + fis0, st)) = getbytearray(r, st), r = jvmref |
sk = fs ', is_fskey(sk), ∀ r, class, st. r = jvmref ∨ getbytearray(r, addclass(class, fis0, st)) = getbytearray(r, st) ⊦ getbytearray(r, addclass(fs .class, (sk × val) ' + fis0, st)) = getbytearray(r, st), r = jvmref
[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_fskey(sk) → (fs = sk .fs ↔ sk = fs ')])], [EXTRATERMS : (sk, fs)]]