Timeline for Find the tight upper bound of $\sum_{i=1}^n \frac{i}{i+x_i}$, where the $x_i$'s are distinct in $\{1,2,...,n\}$
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 2, 2018 at 15:12 | answer | added | js21 | timeline score: 9 | |
| Nov 1, 2018 at 9:35 | answer | added | Wolfgang | timeline score: 4 | |
| Nov 1, 2018 at 9:08 | comment | added | Mickybo Yakari | Are you asking for the maximum of $f:S_{n}\rightarrow\mathbb{R}:\sigma\mapsto\sum_{i=1}^{n}\frac{i}{i+\sigma(i)}$? | |
| Nov 1, 2018 at 7:05 | review | First posts | |||
| Nov 1, 2018 at 7:49 | |||||
| Nov 1, 2018 at 7:04 | history | asked | Xingwu Liu | CC BY-SA 4.0 |