Timeline for How to classify solutions to the following equations?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Nov 21, 2019 at 23:58 | vote | accept | John Greenwood | ||
| Nov 21, 2019 at 23:58 | vote | accept | John Greenwood | ||
| Nov 21, 2019 at 23:58 | |||||
| Nov 21, 2019 at 19:44 | answer | added | Robert Israel | timeline score: 1 | |
| Nov 21, 2019 at 13:10 | comment | added | Geoff Robinson | The second condition seems to be equivalent to $\left( \sum_{i=1}^{n} a_{i} \right)^{2} = \sum_{i=1}^{n}a_{i}^{2}$. In combination with the first euation, this seems to imply that the number of $i$ for which $a_{i}$ is odd is divisibe by $4$. | |
| Nov 21, 2019 at 7:34 | history | edited | John Greenwood | CC BY-SA 4.0 |
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| Nov 21, 2019 at 7:33 | comment | added | John Greenwood | @darijgrinberg oops yes, thank you | |
| Nov 21, 2019 at 7:14 | comment | added | darij grinberg | The first sum should start at $k=1$, right? | |
| Nov 21, 2019 at 6:58 | history | edited | Fedor Petrov | CC BY-SA 4.0 |
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| Nov 21, 2019 at 6:28 | history | asked | John Greenwood | CC BY-SA 4.0 |