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Step * of Lemma fps-zero_wf

∀[X:Type]. ∀[r:CRng].  (0 ∈ PowerSeries(X;r))
BY
{ (Unfold `power-series` 0 THEN ProveWfLemma) }

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Latex:

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Latex:
\mforall{}[X:Type].  \mforall{}[r:CRng].    (0  \mmember{}  PowerSeries(X;r))


By

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Latex:
(Unfold  `power-series`  0  THEN  ProveWfLemma)

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