| ∀ st, rk. (st[rkvs0][rk]) = st[rk] ∨ rk ∈ rkvs0 ⊦ (st[rkv .1, rkv .2][rkvs0][rk]) = st[rk], rk ∈ rkv ', rk ∈ rkvs0 |
rkv = rk0 × val, ∀ st, rk. (st[rkvs0][rk]) = st[rk] ∨ rk ∈ rkvs0 ⊦ (st[rk0, val][rkvs0][rk]) = st[rk], rk ∈ rkv ', rk ∈ rkvs0
[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ rk = rkv .1 ∧ val = rkv .2 ↔ rkv = rk × val])], [EXTRATERMS : (rkv, rk0, val)]]