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Step * of Lemma not_over_and_b

∀[A,B:ℙ].  ¬(A ∧ B) supposing (¬A) ∨ (¬B)
BY
{ (Auto THEN D -1 THEN Auto) }

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Latex:

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Latex:
\mforall{}[A,B:\mBbbP{}].    \mneg{}(A  \mwedge{}  B)  supposing  (\mneg{}A)  \mvee{}  (\mneg{}B)


By

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Latex:
(Auto  THEN  D  -1  THEN  Auto)

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