| ⊦ validvals(str, rkvs + rkvs0, st) ↔ validvals(str, rkvs, st) ∧ validvals(str, rkvs0, st) |
⊦ validvals(str, rkvs, st) ↔ (∀ rkv. rkv ∈ rkvs → validval(str, rkv .1, rkv .2, st))
⊦ (∀ rkv. rkv ∈ rkvs + rkvs0 → validval(str, rkv .1, rkv .2, st)) ↔ validvals(str, rkvs, st) ∧ validvals(str, rkvs0, st)
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, rkvs + rkvs0, str)]]