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Step * of Lemma bor_wf

∀[p,q:𝔹].  (p ∨bq ∈ 𝔹)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[p,q:\mBbbB{}].    (p  \mvee{}\msubb{}q  \mmember{}  \mBbbB{})


By

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Latex:
ProveWfLemma

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