| ((P0 * {H2} ))(H0), P(H0), P1(H3), H3 ⊥ H2 ⊦ ((P1 * (P0 -⊗ P)))(H3 ∪ H2), P(H3 ∪ H2), ∃ H0, H1. H0 ⊥ H2 ∧ H1 = H0 ∪ H2 ∧ P0(H0) ∧ P(H1) |
((P0 * {H2} ))(H0), P(H0), P1(H3), H3 ⊥ H2 ⊦ ((P1 * (P0 -⊗ P)))(H3 ∪ H2), P(H3 ∪ H2), ∃ H. H ⊥ H2 ∧ P0(H) ∧ P(H ∪ H2)