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Step * of Lemma fma_sig_wf

∀G:GrpSig. ∀A:RngSig.  (fma_sig{i:l}(G;A) ∈ 𝕌')
BY
{ Unfold `fma_sig` 0 THEN Auto }

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Latex:

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Latex:
\mforall{}G:GrpSig.  \mforall{}A:RngSig.    (fma\_sig\{i:l\}(G;A)  \mmember{}  \mBbbU{}')


By

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Latex:
Unfold  `fma\_sig`  0  THEN  Auto

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