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Step * of Lemma abgrp_wf

AbGrp ∈ 𝕌'
BY
{ Unfold `abgrp` 0 THEN Auto }

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Latex:

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Latex:
AbGrp  \mmember{}  \mBbbU{}'


By

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Latex:
Unfold  `abgrp`  0  THEN  Auto

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