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Proof step 5 from proof stability (previous step)

((P0 * {H} ))(H0), ((P1 * {H} ))(H1), P(H0) ⊦ (((P0 -⊗ P) * P1))(H1), P(H1)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ ((P0 * P1))(H) ↔ (∃ H0, H1. H0 ⊥ H1 ∧ H = H0 ∪ H1 ∧ P0(H0) ∧ P1(H1))
Proof step 7:
((P0 * {H} ))(H0), P(H0), ∃ H0, H2. H0 ⊥ H2 ∧ H1 = H0 ∪ H2 ∧ P1(H0) ∧ {H} (H2) ⊦ (((P0 -⊗ P) * P1))(H1), P(H1)

Rule argument

spec: <toplevel> name: sep seq: ⊦ ((P0 * P1))(H) ↔ (∃ H0, H1. H0 ⊥ H1 ∧ H = H0 ∪ H1 ∧ P0(H0) ∧ P1(H1)) subst: [H, P1, P0] → [H1, {H} , P1] flags: <all paths>

Additional information

Used terms: H1, {H} , P1