Defining polynomial
|
$( x^{2} + 2 x + 2 )^{10} + 3 x$
|
Invariants
| Base field: | $\Q_{3}$ |
|
| Degree $d$: | $20$ |
|
| Ramification index $e$: | $10$ |
|
| Residue field degree $f$: | $2$ |
|
| Discriminant exponent $c$: | $18$ |
|
| Discriminant root field: | $\Q_{3}(\sqrt{2})$ | |
| Root number: | $-1$ | |
| $\Aut(K/\Q_{3})$: | $C_4$ | |
| This field is not Galois over $\Q_{3}.$ | ||
| Visible Artin slopes: | $[\ ]$ | |
| Visible Swan slopes: | $[\ ]$ | |
| Means: | $\langle\ \rangle$ | |
| Rams: | $(\ )$ | |
| Jump set: | undefined | |
| Roots of unity: | $8 = (3^{ 2 } - 1)$ |
|
Intermediate fields
| $\Q_{3}(\sqrt{2})$, 3.2.2.2a1.1, 3.1.5.4a1.1, 3.2.5.8a1.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Canonical tower
| Unramified subfield: | $\Q_{3}(\sqrt{2})$ $\cong \Q_{3}(t)$ where $t$ is a root of
\( x^{2} + 2 x + 2 \)
|
|
| Relative Eisenstein polynomial: |
\( x^{10} + 3 t \)
$\ \in\Q_{3}(t)[x]$
|
Ramification polygon
| Residual polynomials: | $z^9 + z^8 + 1$ |
| Associated inertia: | $2$ |
| Indices of inseparability: | $[0]$ |
Invariants of the Galois closure
| Galois degree: | $40$ |
| Galois group: | $C_2\times F_5$ (as 20T9) |
| Inertia group: | Intransitive group isomorphic to $C_{10}$ |
| Wild inertia group: | $C_1$ |
| Galois unramified degree: | $4$ |
| Galois tame degree: | $10$ |
| Galois Artin slopes: | $[\ ]$ |
| Galois Swan slopes: | $[\ ]$ |
| Galois mean slope: | $0.9$ |
| Galois splitting model: | not computed |