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Step * of Lemma subtype_rel_grp

GrpSig ⊆r GrpSig{[i | j]}
BY
{ (Unfold `grp_sig` 0 THEN Auto) }

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Latex:

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Latex:
GrpSig  \msubseteq{}r  GrpSig\{[i  |  j]\}


By

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Latex:
(Unfold  `grp\_sig`  0  THEN  Auto)

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