Step
*
of Lemma
prop_and_wf
∀[T:Type]. ∀[P,Q:T ⟶ ℙ].  (P ∧ Q ∈ T ⟶ ℙ)
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[T:Type].  \mforall{}[P,Q:T  {}\mrightarrow{}  \mBbbP{}].    (P  \mwedge{}  Q  \mmember{}  T  {}\mrightarrow{}  \mBbbP{})
By
Latex:
ProveWfLemma
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