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Step * of Lemma series-sum_wf

∀[x:ℕ ⟶ ℝ]. ∀[a:ℝ].  (Σn.x[n] = a ∈ ℙ)
BY
{ (Unfold `series-sum` 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[x:\mBbbN{}  {}\mrightarrow{}  \mBbbR{}].  \mforall{}[a:\mBbbR{}].    (\mSigma{}n.x[n]  =  a  \mmember{}  \mBbbP{})


By

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Latex:
(Unfold  `series-sum`  0  THEN  Auto)

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