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Proof step 24 from proof lift-ex-r (previous step)

⊦ (a[_∃ rP])(Ha) ↔ (∃ r. (a[rP(r)])(Ha))

User applied rule case distinction

And obtained the following new goals

Rule argument

[CASEDARG : pos: right 1, ()]

Additional information

[[CONCRETESIMPRULES : ()]]