| rs1 ∩ rs0 = ∅, ((r => o))(mk(rs1, f)), R[rs0, f, g], ∀ r0. r0 ∈ rs1 → g(r; a1)(r0) = a1 ⊦ (g(r)[r => o] * R)[rs1 ∪ rs0, f, g], g(r)[r => o][rs1, f, g], r ∈ rs0 |
rs1 ∩ rs0 = ∅, ((r => o))(mk(rs1, f)), R[rs0, f, g], ∀ r0. r0 ∈ rs1 → (r = r0 ⊃ a1;g(r0)) = a1 ⊦ g(r)[r => o][rs1, f, g], (g(r)[r => o] * R)[rs1 ∪ rs0, f, g], r ∈ rs0