Timeline for Crossed product division algebra
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 13, 2018 at 14:24 | comment | added | Ehud Meir | I usually write $K^{\alpha}G$ for the crossed product. This has a basis $U_g$ over $K$, for $g$ in the Galois group. Conjugation by $U_g$ gives you the Galois action of $G$, and $U_gU_h = \alpha(g,h)U_{gh}$. | |
| Jul 13, 2018 at 11:45 | vote | accept | CommunityBot | ||
| Jul 13, 2018 at 11:35 | comment | added | user39380 | What does the notation $U_g$ mean? Thanks! | |
| Jul 13, 2018 at 11:17 | vote | accept | CommunityBot | ||
| Jul 13, 2018 at 11:42 | |||||
| Jul 13, 2018 at 7:56 | history | answered | Ehud Meir | CC BY-SA 4.0 |