Timeline for How often does $-1$ have a square root in a local field?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 22, 2022 at 12:03 | vote | accept | Windi | ||
| Nov 20, 2022 at 15:12 | answer | added | KConrad | timeline score: 3 | |
| Nov 20, 2022 at 15:00 | review | Close votes | |||
| Nov 26, 2022 at 3:07 | |||||
| Nov 20, 2022 at 14:33 | comment | added | Wojowu | If the residue characteristic is odd, this happens iff $\sqrt{-1}$ exists in residue field, iff the residue field has size $q\equiv 1\pmod 4$. Depending on how exactly you count, you could say that this happens roughly half the time. | |
| Nov 20, 2022 at 14:30 | history | asked | Windi | CC BY-SA 4.0 |