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Step * of Lemma comb_for_l_member_wf

λT,x,l,z. (x ∈ l) ∈ T:Type ⟶ x:T ⟶ l:(T List) ⟶ (↓True) ⟶ ℙ
BY
{ (ProveOpCombinatorTyping Auto) `l_member_wf` }

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Latex:

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Latex:
\mlambda{}T,x,l,z.  (x  \mmember{}  l)  \mmember{}  T:Type  {}\mrightarrow{}  x:T  {}\mrightarrow{}  l:(T  List)  {}\mrightarrow{}  (\mdownarrow{}True)  {}\mrightarrow{}  \mBbbP{}


By

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Latex:
(ProveOpCombinatorTyping  Auto)  `l\_member\_wf`

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