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Proof step 1 from proof ex2-shiftw-inst (conclusion)

⊦ (((_∃ rrP -* P) * P0))(H) ↔ (((_∃ rrP -* P) * P0))(H) ∧ (((rrP(r0, r1) -* P) * P0))(H)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
(((_∃ rrP -* P) * P0))(H) ⊦ (((rrP(r0, r1) -* P) * P0))(H)

Rule argument

Additional information