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Proof step 1 from proof contract-wand (conclusion)

⊦ P0 * (P0 -* P1) = (P0 * (P0 -* P1) ∧ P1)

User applied rule expand right

And obtained the following new goals

Proof step 2:
⊦ ((P0 * (P0 -* P1)))(H) ↔ ((P0 * (P0 -* P1) ∧ P1))(H)

Rule argument

pos: right 1

Additional information