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Step * of Lemma prop_and_wf

∀[T:Type]. ∀[P,Q:T ⟶ ℙ].  (P ∧ Q ∈ T ⟶ ℙ)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[T:Type].  \mforall{}[P,Q:T  {}\mrightarrow{}  \mBbbP{}].    (P  \mwedge{}  Q  \mmember{}  T  {}\mrightarrow{}  \mBbbP{})


By

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Latex:
ProveWfLemma

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