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Step * of Lemma squash_and

∀[a,b:ℙ].  uiff(↓a ∧ b;(↓a) ∧ (↓b))
BY
{ (Auto THEN SquashExRepD THEN D 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a,b:\mBbbP{}].    uiff(\mdownarrow{}a  \mwedge{}  b;(\mdownarrow{}a)  \mwedge{}  (\mdownarrow{}b))


By

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Latex:
(Auto  THEN  SquashExRepD  THEN  D  0  THEN  Auto)

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