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Step * of Lemma grp_id_wf

∀[g:GrpSig]. (e ∈ |g|)
BY
{ ModulePiTac 6 ``grp_car grp_eq grp_le grp_op grp_id grp_inv`` }

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Latex:

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Latex:
\mforall{}[g:GrpSig].  (e  \mmember{}  |g|)


By

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Latex:
ModulePiTac  6  ``grp\_car  grp\_eq  grp\_le  grp\_op  grp\_id  grp\_inv``

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