Timeline for About real abelian number fields
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 19, 2018 at 15:32 | comment | added | Franz Lemmermeyer | Write $J = KH$ for some $H \subseteq {\mathbb Q}(\zeta_b)$. If $p$ divides the degree of $H$, then there is a prime ideal with ramification index $p$ in $H$. If $H/K$ is unramified, this ramification must be killed by $K/{\mathbb Q}$, which is only possible if $p$ divides its degree. Look up Abhyankar's lemma and its proof for details. | |
| Oct 16, 2018 at 17:46 | vote | accept | Cláudio da Silva Velasque | ||
| Oct 16, 2018 at 13:00 | answer | added | Filippo Alberto Edoardo | timeline score: 0 | |
| Oct 13, 2018 at 14:15 | review | First posts | |||
| Oct 13, 2018 at 14:45 | |||||
| Oct 13, 2018 at 14:15 | history | asked | Cláudio da Silva Velasque | CC BY-SA 4.0 |