Timeline for Why is every quadratic subfield of a Galois extension of the rationals with the quaternions as Galois group real?
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 30, 2010 at 15:42 | answer | added | David Hansen | timeline score: 2 | |
| Sep 21, 2010 at 17:17 | answer | added | JSE | timeline score: 7 | |
| Sep 21, 2010 at 6:10 | answer | added | Robin Chapman | timeline score: 14 | |
| Sep 21, 2010 at 2:19 | answer | added | David E Speyer | timeline score: 7 | |
| Sep 16, 2010 at 13:25 | comment | added | cfranc | You needn't assume that L contains a quadratic subfield. By Galois theory it contains exactly 3, corresponding to the 3 normal subgroups of Q of order 4 which you mention (and which appear in Alex's answer). | |
| Sep 16, 2010 at 10:18 | answer | added | Alex B. | timeline score: 3 | |
| Sep 16, 2010 at 10:12 | comment | added | Kevin Buzzard | This stinks of homework. It's a nice question though. Why not ask it at one of the sites in the FAQ? It's not really research-level... | |
| Sep 16, 2010 at 9:08 | history | asked | heiko | CC BY-SA 2.5 |