Wikipedia:Reference desk/Archives/Mathematics/2014 February 21
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February 21[edit]
Tweet-length proof of Erdős discrepancy problem[edit]
Proof of Erdős discrepancy problem in 140 characters:
k=C+1, d=0, abs(k*x[0]) = C+1 which is > C.
There, saved you a 13 GB download. Hcobb (talk) 22:24, 21 February 2014 (UTC)
- Cute, but the sum starts at i=1, not i=0, so x0 is undefined. --Mark viking (talk) 22:32, 21 February 2014 (UTC)