Step
*
1
of Lemma
qsum-non-neg
.....assertion.....
1. j : ℕ
2. f : ℕj ⟶ ℚ
3. ∀n:ℕj. (0 ≤ f[n])
⊢ Σ0 ≤ n < j. 0 ≤ Σ0 ≤ n < j. f[n]
BY
{ (BLemma `qsum-qle` THEN Auto) }
Latex:
Latex:
.....assertion.....
1. j : \mBbbN{}
2. f : \mBbbN{}j {}\mrightarrow{} \mBbbQ{}
3. \mforall{}n:\mBbbN{}j. (0 \mleq{} f[n])
\mvdash{} \mSigma{}0 \mleq{} n < j. 0 \mleq{} \mSigma{}0 \mleq{} n < j. f[n]
By
Latex:
(BLemma `qsum-qle` THEN Auto)
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