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Proof step 20 from proof ex2-shiftw (conclusion)

⊦ (_∃ rrP -* P)(H) ↔ (∀ r0, r1. (rrP(r0, r1) -* P)(H))

User applied rule case distinction

And obtained the following new goals

Rule argument

[CASEDARG : pos: right 1, ()]

Additional information

[[CONCRETESIMPRULES : ()]]