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The Simplification of the Induction Conclusion (Step 11)

The Simplification of the Induction Conclusion (Step 11)

Subgoal *1/2' 
(IMPLIES (AND (CONSP A) 
              (EQUAL (APP (APP (CDR A) B) C) 
                     (APP (CDR A) (APP B C)))) 
         T) 

Click on the link above to use the definition of IMPLIES. Since the conclusion of the implication is now identically T, the implication simplifies to T.