Step
*
of Lemma
and_functionality_wrt_rev_uimplies
∀[P1,P2,Q1,Q2:ℙ].  ({rev_uimplies(P1;P2)} 
⇒ {rev_uimplies(Q1;Q2)} 
⇒ {rev_uimplies(P1 ∧ Q1;P2 ∧ Q2)})
BY
{ (Unfold `guard` 0 THEN Auto) }
Latex:
Latex:
\mforall{}[P1,P2,Q1,Q2:\mBbbP{}].
    (\{rev\_uimplies(P1;P2)\}  {}\mRightarrow{}  \{rev\_uimplies(Q1;Q2)\}  {}\mRightarrow{}  \{rev\_uimplies(P1  \mwedge{}  Q1;P2  \mwedge{}  Q2)\})
By
Latex:
(Unfold  `guard`  0  THEN  Auto)
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