| rs1 ∩ rs0 = ∅, R[rs0, f, g], ∀ r0. (r0 ∈ rs1 ↔ r0 = r) ∧ (r0 ∈ rs1 → f(r0) = (r0 = r ⊃ o0;(∅ ++ r)[r0])), ∀ r. r ∈ rs1 → g(r) = a ⊦ r = null, (a[r => o1] * R)[rs1 ∪ rs0, f(r; o1), g], ∀ r0. (r0 ∈ mk(rs1, f(r; o1)) ↔ r0 ∈ (∅ ++ r)[r, o1]) ∧ (r0 ∈ mk(rs1, f(r; o1)) → mk(rs1, f(r; o1))[r0] = (∅ ++ r)[r, o1][r0]) |
rs1 ∩ rs0 = ∅, R[rs0, f, g], ∀ r. r ∈ rs1 → g(r) = a, ∀ r0. (r0 ∈ rs1 ↔ r0 = r) ∧ (r0 ∈ rs1 → f(r0) = (r0 = r ⊃ o0;(∅ ++ r)[r0])) ⊦ r = null, (a[r => o1] * R)[rs1 ∪ rs0, f(r; o1), g], (r0 ∈ rs1 ↔ r0 = r) ∧ (r0 ∈ rs1 → (r = r0 ⊃ o1;f(r0)) = (r0 = r ⊃ o1;(∅ ++ r)[r0]))
Used simplifier rules: ⊦ H[r0, o][r] = (r = r0 ∧ r0 ∈ H ⊃ o;H[r]); (s)% ⊦ r ∈ rs → mk(rs, f)[r] = f(r); (s)%r0 ≠ null, ¬ r0 ∈ H ⊦ r ∈ H ++ r0 ↔ r = r0 ∨ r ∈ H; (s)% ⊦ ¬ r ∈ ∅; (s)% ⊦ r ∈ H[r0, o] ↔ r ∈ H; (s)% ⊦ r ∈ mk(rs, f) ↔ r ∈ rs; (s)