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Step * of Lemma forall_wf

∀[A:Type]. ∀[B:A ⟶ ℙ].  (∀a.B[a] ∈ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[A:Type].  \mforall{}[B:A  {}\mrightarrow{}  \mBbbP{}].    (\mforall{}a.B[a]  \mmember{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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