Step
*
1
of Lemma
binomial-inequality1
1. [a] : ℕ
2. [b] : ℕ
3. [n] : ℕ+
⊢ (a^n + b^n) ≤ Σ(choose(n;i) * a^i * b^(n - i) | i < n + 1)
BY
{ xxx(RWO "sum_split1" 0 THENA Auto)xxx }
1
1. [a] : ℕ
2. [b] : ℕ
3. [n] : ℕ+
⊢ (a^n + b^n) ≤ (Σ(choose(n;i) * a^i * b^(n - i) | i < (n + 1) - 1)
+ (choose(n;(n + 1) - 1) * a^((n + 1) - 1) * b^(n - (n + 1) - 1)))
Latex:
Latex:
1. [a] : \mBbbN{}
2. [b] : \mBbbN{}
3. [n] : \mBbbN{}\msupplus{}
\mvdash{} (a\^{}n + b\^{}n) \mleq{} \mSigma{}(choose(n;i) * a\^{}i * b\^{}(n - i) | i < n + 1)
By
Latex:
xxx(RWO "sum\_split1" 0 THENA Auto)xxx
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