| ⊦ r -- fs ' ∈ addarray(r0, vals, j, st) ↔ r -- fs ' ∈ st |
⊦ rk ∈ st → rk ∈ addarray(r, vals, j, st)
r -- fs ' ∈ addarray(r0, vals, j, st), r ∈ addarray(r0, vals, j, st) ⊦ r -- fs ' ∈ st
[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st])]]