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Step * of Lemma matrix-minus_wf

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

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Latex:

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


By

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Latex:
ProveWfLemma

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