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Jul 25, 2016 at 15:47 vote accept math110
S Jul 20, 2016 at 4:40 history bounty ended CommunityBot
S Jul 20, 2016 at 4:40 history notice removed CommunityBot
Jul 17, 2016 at 4:54 answer added Robert Z timeline score: 4
Jul 16, 2016 at 16:54 answer added Robert Z timeline score: 1
Jul 15, 2016 at 11:28 vote accept math110
Jul 15, 2016 at 11:28
Jul 14, 2016 at 6:23 answer added Sergei timeline score: 0
Jul 13, 2016 at 12:55 comment added Sergei May be start with simple $(\sum x_k)^2=\sum x_k x_m$ -?
S Jul 12, 2016 at 3:26 history bounty started math110
S Jul 12, 2016 at 3:26 history notice added math110 Authoritative reference needed
Jul 10, 2016 at 14:54 history edited math110 CC BY-SA 3.0
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Jul 10, 2016 at 1:32 comment added Gerhard Paseman If $i=j$ is allowed on the constraints, then it would rule out my suggested example. Although the phrasing is explicit, I would add your implication as a consequence to the conditions to make the problem robust against mistakes like mine. Gerhard "Back For A Third Reading" Paseman, 2016.07.09.
Jul 10, 2016 at 1:26 comment added Todd Trimble @GerhardPaseman Don't the conditions imply $x_1^2 \leq 1$?
Jul 10, 2016 at 1:07 comment added Gerhard Paseman What rules out the case of $x_1=2$ (or $C+1$) and the others set to zero or something really small and positive? Gerhard "Not Sure It's Been Proven" Paseman, 2016.07.09.
Jul 9, 2016 at 18:49 review Close votes
Jul 10, 2016 at 17:25
Jul 9, 2016 at 15:21 history asked math110 CC BY-SA 3.0