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Step * of Lemma sq_or_wf

∀[a,b:ℙ].  (a ↓∨ b ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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


By

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Latex:
ProveWfLemma

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