| r ∈ (H4 ∪ H3) ∪ H0 ↔ r ∈ (H5 ∪ H2) ∪ H, ((r => a × r1))(H5), ((r => a × r0))(H4), ls(r1, x0)(H2), ls(r0, x0)(H3), r ∈ (H4 ∪ H3) ∪ H0, H ⊥ H2, H ⊥ H5, H5 ⊥ H2, H0 ⊥ H3, H0 ⊥ H4, H4 ⊥ H3, H4 ∪ H3 ⊥ H0, r ∈ (H5 ∪ H2) ∪ H → (r ∈ H4 ∪ H3 ⊃ (H4 ∪ H3)[r];H0[r]) = ((H5 ∪ H2) ∪ H)[r], ∀ r. (r ∈ (H4 ∪ H3) ∪ H0 ↔ r ∈ (H5 ∪ H2) ∪ H) ∧ (r ∈ (H4 ∪ H3) ∪ H0 → ((H4 ∪ H3) ∪ H0)[r] = ((H5 ∪ H2) ∪ H)[r]), ∀ H2, H0, H1, H, r. H2 ∪ H0 = H1 ∪ H ∧ ls(r, x0)(H2) ∧ ls(r, x0)(H1) ∧ H2 ⊥ H0 ∧ H1 ⊥ H → H2 = H1 ⊦ H4 ∪ H3 = H5 ∪ H2, H4 = H5 ∧ r0 = r1 |
H4[r] = ((H5 ∪ H2) ∪ H)[r], ((r => a × r0))(H4), ((r => a × r1))(H5), ls(r0, x0)(H3), ls(r1, x0)(H2), r ∈ (H4 ∪ H3) ∪ H0, r ∈ (H5 ∪ H2) ∪ H, H4 ⊥ H3, H0 ⊥ H4, H0 ⊥ H3, H5 ⊥ H2, H ⊥ H5, H ⊥ H2, ∀ H2, H0, H1, H, r. H2 ∪ H0 = H1 ∪ H ∧ ls(r, x0)(H2) ∧ ls(r, x0)(H1) ∧ H2 ⊥ H0 ∧ H1 ⊥ H → H2 = H1, ∀ r. (r ∈ (H4 ∪ H3) ∪ H0 ↔ r ∈ (H5 ∪ H2) ∪ H) ∧ (r ∈ (H4 ∪ H3) ∪ H0 → ((H4 ∪ H3) ∪ H0)[r] = ((H5 ∪ H2) ∪ H)[r]) ⊦ H4 ∪ H3 = H5 ∪ H2, H4 = H5 ∧ r0 = r1
Used simplifier rules: r ∈ H0 ∪ H1 ⊦ H0 ⊥ H1 → (H0 ∪ H1)[r] = (r ∈ H0 ⊃ H0[r];H1[r]); (s)% ⊦ H1 ⊥ H2 → (H1 ∪ H2 ⊥ H0 ↔ H0 ⊥ H1 ∧ H0 ⊥ H2); (ws)% ⊦ ((r => ce))(H) → r ∈ H; (s)% ⊦ H0 ⊥ H1 → (r ∈ H0 ∪ H1 ↔ r ∈ H0 ∨ r ∈ H1); (s)