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Step * of Lemma prod-metric-space_wf

∀[k:ℕ]. ∀[X:ℕk ⟶ MetricSpace].  (prod-metric-space(k;X) ∈ MetricSpace)
BY
{ ProveWfLemma }

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Latex:

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Latex:
\mforall{}[k:\mBbbN{}].  \mforall{}[X:\mBbbN{}k  {}\mrightarrow{}  MetricSpace].    (prod-metric-space(k;X)  \mmember{}  MetricSpace)


By

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Latex:
ProveWfLemma

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