Defining polynomial
|
$( x^{3} + 2 x + 11 )^{3} + 13 x^{2}$
|
Invariants
| Base field: | $\Q_{13}$ |
|
| Degree $d$: | $9$ |
|
| Ramification index $e$: | $3$ |
|
| Residue field degree $f$: | $3$ |
|
| Discriminant exponent $c$: | $6$ |
|
| Discriminant root field: | $\Q_{13}$ | |
| Root number: | $1$ | |
| $\Aut(K/\Q_{13})$ $=$ $\Gal(K/\Q_{13})$: | $C_9$ | |
| This field is Galois and abelian over $\Q_{13}.$ | ||
| Visible Artin slopes: | $[\ ]$ | |
| Visible Swan slopes: | $[\ ]$ | |
| Means: | $\langle\ \rangle$ | |
| Rams: | $(\ )$ | |
| Jump set: | undefined | |
| Roots of unity: | $2196 = (13^{ 3 } - 1)$ |
|
Intermediate fields
| 13.3.1.0a1.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Canonical tower
| Unramified subfield: | 13.3.1.0a1.1 $\cong \Q_{13}(t)$ where $t$ is a root of
\( x^{3} + 2 x + 11 \)
|
|
| Relative Eisenstein polynomial: |
\( x^{3} + 13 t^{2} \)
$\ \in\Q_{13}(t)[x]$
|
Ramification polygon
| Residual polynomials: | $z^2 + 3 z + 3$ |
| Associated inertia: | $1$ |
| Indices of inseparability: | $[0]$ |
Invariants of the Galois closure
| Galois degree: | $9$ |
| Galois group: | $C_9$ (as 9T1) |
| Inertia group: | Intransitive group isomorphic to $C_3$ |
| Wild inertia group: | $C_1$ |
| Galois unramified degree: | $3$ |
| Galois tame degree: | $3$ |
| Galois Artin slopes: | $[\ ]$ |
| Galois Swan slopes: | $[\ ]$ |
| Galois mean slope: | $0.6666666666666666$ |
| Galois splitting model: | $x^{9} - x^{8} - 84 x^{7} + 121 x^{6} + 1940 x^{5} - 1706 x^{4} - 17861 x^{3} + 3544 x^{2} + 58012 x + 23977$ |