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Step * of Lemma sq_stable__sq_or

∀[a,b:ℙ].  SqStable(a ↓∨ b)
BY
{ (Unfold `sq_or` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[a,b:\mBbbP{}].    SqStable(a  \mdownarrow{}\mvee{}  b)


By

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Latex:
(Unfold  `sq\_or`  0  THEN  Auto)

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