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Step * of Lemma squash_not

∀[p:ℙ]. uiff(↓¬p;¬p)
BY
{ (Auto THEN D 0⋅ THEN Auto THEN SquashExRepD THEN Auto) }

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Latex:

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Latex:
\mforall{}[p:\mBbbP{}].  uiff(\mdownarrow{}\mneg{}p;\mneg{}p)


By

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Latex:
(Auto  THEN  D  0\mcdot{}  THEN  Auto  THEN  SquashExRepD  THEN  Auto)

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