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Step * of Lemma fabgrp_grp_wf

∀s:DSet. ∀f:fabgrp_sig{i:l}(s).  (f.grp ∈ AbGrp)
BY
{ ModulePiTac 3 ``fabgrp_grp fabgrp_inj fabgrp_umap`` }

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Latex:

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Latex:
\mforall{}s:DSet.  \mforall{}f:fabgrp\_sig\{i:l\}(s).    (f.grp  \mmember{}  AbGrp)


By

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Latex:
ModulePiTac  3  ``fabgrp\_grp  fabgrp\_inj  fabgrp\_umap``

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