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Step * of Lemma comb_for_extend_perm_wf

λn,p,z. ↑{n}(p) ∈ n:ℕ ⟶ p:Sym(n) ⟶ (↓True) ⟶ Sym(n + 1)
BY
{ (ProveOpCombinatorTyping Auto) `extend_perm_wf` }

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Latex:

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Latex:
\mlambda{}n,p,z.  \muparrow{}\{n\}(p)  \mmember{}  n:\mBbbN{}  {}\mrightarrow{}  p:Sym(n)  {}\mrightarrow{}  (\mdownarrow{}True)  {}\mrightarrow{}  Sym(n  +  1)


By

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Latex:
(ProveOpCombinatorTyping  Auto)  `extend\_perm\_wf`

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