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Step * of Lemma rsum-zero

∀[n,m:ℤ].  (Σ{r0 | n≤k≤m} = r0)
BY
{ (Auto THEN RWO "rsum-constant" 0 THEN Auto THEN nRNorm 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[n,m:\mBbbZ{}].    (\mSigma{}\{r0  |  n\mleq{}k\mleq{}m\}  =  r0)


By

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Latex:
(Auto  THEN  RWO  "rsum-constant"  0  THEN  Auto  THEN  nRNorm  0  THEN  Auto)

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