Exercise:

FORALL x(I) [p(O) AND Q(OI) x OR ~p AND R(OI) x] IMPLIES FORALL x Q x OR FORALL x R x

You may not use ADVICE, but all other rules and commands are allowed.

Only book theorems may be ASSERTed as lemmas without proof.

For a complete list of book theorems, type PROBLEMS.

No more help available. Sorry.

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