Timeline for Vanishing of a sum of roots of unity
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Apr 17, 2022 at 15:52 | comment | added | GH from MO | @DenisSerre Good that you accepted François' answer. The main ideas are his. He started the solution, and he finished it. I only contributed an intermediate calculation, which is rather standard. | |
| Apr 17, 2022 at 6:25 | vote | accept | Denis Serre | ||
| Apr 17, 2022 at 6:25 | comment | added | Denis Serre | @GHfromMO. I hesitated to accept either solution, because both of you contributed significantly to the complete solution of the question. But if you suggest that François' answer be accepted, I'll follow you. | |
| Apr 16, 2022 at 20:06 | history | edited | François Brunault | CC BY-SA 4.0 |
added 405 characters in body
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| Apr 16, 2022 at 17:45 | comment | added | GH from MO | Thanks for working out the general case. I rewrote my answer several times. I had a version with Galois conjugates, a version with residue calculation, a version where I suspected the generalization for general $N$, a version were I thought I generalized for general $N$, and finally the clean short version for odd $N$. Your ideas are very nice, and your answer should be accepted. | |
| Apr 16, 2022 at 17:41 | history | answered | François Brunault | CC BY-SA 4.0 |