Step of Proof: not-true 11,40

Inference at * 
Iof proof for Lemma not-true:


  (True)  False 
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 by Auto 
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DefinitionsP  Q, P & Q, P  Q, P  Q, A, x:AB(x), True, t  T, False
Lemmasnot wf, true wf, false wf

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