Timeline for Most squares in the first half-interval
Current License: CC BY-SA 2.5
6 events
when toggle format | what | by | license | comment | |
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May 19, 2010 at 22:36 | answer | added | KConrad | timeline score: 29 | |
May 19, 2010 at 22:08 | comment | added | Dror Speiser | Another reference: "Introduction to Cyclotomic Fields", L. C. Washington, pp 45, exercise 4.5. | |
May 19, 2010 at 22:07 | comment | added | Will Jagy | Note that this is trivial for $p \equiv 1 \pmod 4$ because then $-1$ is a quadratic residue, and any $k$ is a quadratic residue if and only if $p-k$ is. So exactly half lie in your interval, exactly half lie in the interval from $(p+1)/2$ to $p-1.$ | |
May 19, 2010 at 20:45 | vote | accept | Andrea Ferretti | ||
May 19, 2010 at 19:17 | answer | added | Cam McLeman | timeline score: 13 | |
May 19, 2010 at 18:43 | history | asked | Andrea Ferretti | CC BY-SA 2.5 |