| ∀ st, rkvs0. st[rkvs1 + rkvs0] = (st[rkvs1][rkvs0]) ⊦ st[(rkv + rkvs1) + rkvs0] = (st[rkv + rkvs1][rkvs0]) |
⊦ st[rkv ' + rkvs] = (st[rkv .1, rkv .2][rkvs])
∀ st, rkvs0. st[rkvs1 + rkvs0] = (st[rkvs1][rkvs0]) ⊦ (st[rkv .1, rkv .2][rkvs1 + rkvs0]) = (st[rkv .1, rkv .2][rkvs1][rkvs0])
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (rkvs + rkvs0) + rkvs1 = rkvs + rkvs0 + rkvs1], [CSIMPSEQ : ⊦ rkv + rkvs = rkv ' + rkvs])]]