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Step * of Lemma fps-add_wf

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

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Latex:

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Latex:
\mforall{}[X:Type].  \mforall{}[r:CRng].  \mforall{}[f,g:PowerSeries(X;r)].    ((f+g)  \mmember{}  PowerSeries(X;r))


By

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

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