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Step * of Lemma guard_functionality_wrt_iff

∀p,q:ℙ.  ({p ⇐⇒ q} ⇒ {{p} ⇐⇒ {q}})
BY
{ (Unfold `guard` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}p,q:\mBbbP{}.    (\{p  \mLeftarrow{}{}\mRightarrow{}  q\}  {}\mRightarrow{}  \{\{p\}  \mLeftarrow{}{}\mRightarrow{}  \{q\}\})


By

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Latex:
(Unfold  `guard`  0  THEN  Auto)

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