Timeline for Can the sum of two roots of unity be a root of unity?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 21, 2013 at 13:45 | vote | accept | Liss | ||
| Apr 9, 2013 at 13:04 | answer | added | Douglas Zare | timeline score: 18 | |
| Apr 9, 2013 at 12:58 | answer | added | Name | timeline score: 10 | |
| Apr 9, 2013 at 12:44 | history | edited | Liss | CC BY-SA 3.0 |
clarified the question by adding more details
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| Apr 9, 2013 at 12:43 | comment | added | Liss | and p is prime, true! will it still hold? ... | |
| Apr 9, 2013 at 12:42 | comment | added | Liss | yes, the order must stay the same | |
| Apr 9, 2013 at 12:18 | comment | added | Douglas Zare | Cyclotomic polynomials show some ways that sums of roots of unity can be $0$. Slight modifications show ways that roots of unity can add up to another root of unity. I think not all of these come directly from cyclotomic polynomials. | |
| Apr 9, 2013 at 11:56 | comment | added | Loïc Teyssier | Does your sum need to be a root of unity of same order $p$? | |
| Apr 9, 2013 at 11:55 | answer | added | Loïc Teyssier | timeline score: 9 | |
| Apr 9, 2013 at 11:50 | history | asked | Liss | CC BY-SA 3.0 |