Step
*
1
of Lemma
dot-product-zero
1. n : ℕ
2. x : ℝ^n
⊢ Σ{(x i) * r0 | 0≤i≤n - 1} = r0
BY
{ (nRNorm 0 THEN RWO "rsum-zero" 0 THEN Auto) }
Latex:
Latex:
1. n : \mBbbN{}
2. x : \mBbbR{}\^{}n
\mvdash{} \mSigma{}\{(x i) * r0 | 0\mleq{}i\mleq{}n - 1\} = r0
By
Latex:
(nRNorm 0 THEN RWO "rsum-zero" 0 THEN Auto)
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