| rs1 ∩ rs0 = ∅, a[r => o0][rs1, f, g], R[rs0, f, g] ⊦ (a[r => o1] * R)[rs1 ∪ rs0, f(r; o1), g], ((r => o1))(mk(rs1, f(r; o1))) ∧ (∀ r. r ∈ rs1 → g(r) = a) |
rs1 ∩ rs0 = ∅, R[rs0, f, g], a[r => o0][rs1, f, g] ⊦ (a[r => o1] * R)[rs1 ∪ rs0, f(r; o1), g], ((r => o1))(mk(rs1, f(r; o1))) ∧ (r0 ∈ rs1 → g(r0) = a)