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Step * of Lemma opt_wf

∀[T:Type]. ∀[x:T]. ∀[b:𝔹].  ((b?x) ∈ T?)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[x:T].  \mforall{}[b:\mBbbB{}].    ((b?x)  \mmember{}  T?)


By

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Latex:
ProveWfLemma

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