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Step * of Lemma sq_stable__implies

∀[P,Q:ℙ].  (SqStable(Q) ⇒ SqStable(P ⇒ Q))
BY
{ (Unfold `sq_stable` 0 THEN skip{Auto}) }

1
∀[P,Q:ℙ].  (((↓Q) ⇒ Q) ⇒ (↓P ⇒ Q) ⇒ P ⇒ Q)

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Latex:

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Latex:
\mforall{}[P,Q:\mBbbP{}].    (SqStable(Q)  {}\mRightarrow{}  SqStable(P  {}\mRightarrow{}  Q))


By

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Latex:
(Unfold  `sq\_stable`  0  THEN  skip\{Auto\})

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