Step
*
of Lemma
delta_wf
∀[i,j:ℤ]. (delta(i;j) ∈ ℕ2)
BY
{ (Unfold `delta` 0 THEN Auto) }
Latex:
Latex:
\mforall{}[i,j:\mBbbZ{}]. (delta(i;j) \mmember{} \mBbbN{}2)
By
Latex:
(Unfold `delta` 0 THEN Auto)
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