X2132 : %THEOREM%

X2132 is a theorem.
Exercise:
FORALL w(I) [~R(OII) w w] IMPLIES EXISTS x(I) EXISTS y(I) .~R x y AND .Q(OII) y x IMPLIES FORALL z(I) Q z z
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.

TPS documentation homepage


© 1988-99, Carnegie Mellon University.

TPS homepage