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Step * of Lemma comb_for_perm_igrp_wf

λT,z. perm_igrp(T) ∈ T:Type ⟶ (↓True) ⟶ IGroup
BY
{ (ProveOpCombinatorTyping Auto) `perm_igrp_wf` }

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Latex:

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Latex:
\mlambda{}T,z.  perm\_igrp(T)  \mmember{}  T:Type  {}\mrightarrow{}  (\mdownarrow{}True)  {}\mrightarrow{}  IGroup


By

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Latex:
(ProveOpCombinatorTyping  Auto)  `perm\_igrp\_wf`

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