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Step * of Lemma not_assert_elim

∀[b:𝔹]. b = ff supposing ¬↑b
BY
{ (Auto THEN MoveToConcl (-1) THEN BoolInd 1 THEN Reduce 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[b:\mBbbB{}].  b  =  ff  supposing  \mneg{}\muparrow{}b


By

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Latex:
(Auto  THEN  MoveToConcl  (-1)  THEN  BoolInd  1  THEN  Reduce  0  THEN  Auto)

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