| 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])) ⊦ mk(rs1, f(r; o1)) = (∅ ++ r)[r, o1], r = null, (a[r => o1] * R)[rs1 ∪ rs0, f(r; o1), g] |
⊦ H0 = H1 ↔ (∀ r. (r ∈ H0 ↔ r ∈ H1) ∧ (r ∈ H0 → H0[r] = H1[r]))
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])
Used terms: (∅ ++ r)[r, o1], mk(rs1, f(r; o1))