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The Final Simplification in the Base Case (Step 3)

The Final Simplification in the Base Case (Step 3)

Subgoal *1/1' 
(IMPLIES (NOT (CONSP A)) 
         T) 

Now that its conclusion is identically T the IMPLIES will simplify to T (not shown) and we are done with Subgoal *1/1'.

You may click here to return to the main proof.