Step
*
of Lemma
zero-matrix_wf
∀[m,n:ℤ]. ∀[r:RngSig].  (0 ∈ Matrix(n;m;r))
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[m,n:\mBbbZ{}].  \mforall{}[r:RngSig].    (0  \mmember{}  Matrix(n;m;r))
By
Latex:
ProveWfLemma
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