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Step * of Lemma identity-matrix_wf

∀[n,m:ℤ]. ∀[r:RngSig].  (I ∈ Matrix(n;m;r))
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[n,m:\mBbbZ{}].  \mforall{}[r:RngSig].    (I  \mmember{}  Matrix(n;m;r))


By

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Latex:
ProveWfLemma

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