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Step * of Lemma sq_stable__uiff

∀[P,Q:ℙ].  (SqStable(P) ⇒ SqStable(Q) ⇒ SqStable(uiff(P;Q)))
BY
{ (UnivFmlaCD [] THENA Auto) }

1
1. [P] : ℙ
2. [Q] : ℙ
3. SqStable(P)
4. SqStable(Q)
⊢ SqStable(uiff(P;Q))

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Latex:

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


By

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Latex:
(UnivFmlaCD  []  THENA  Auto)

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