| P0(H1 ∪ H0), P1(H2 ∪ H0), H1 ⊥ H0, H2 ⊥ H1, H2 ⊥ H0 ⊦ H1 ⊥ H0 ∧ H1 ⊥ H2 ∧ H2 ⊥ H0 ∧ H2 ∪ H1 ∪ H0 = H1 ∪ H2 ∪ H0 ∧ P0(H1 ∪ H0) ∧ P1(H2 ∪ H0) |
P0(H1 ∪ H0), P1(H2 ∪ H0), H2 ⊥ H0, H2 ⊥ H1, H1 ⊥ H0 ⊦ H2 ∪ H1 ∪ H0 = H1 ∪ H2 ∪ H0
Used simplifier rules: ⊦ H0 ⊥ H1 → H1 ⊥ H0; (s)