Defining polynomial
|
\(x^{4} + 153\)
|
Invariants
| Base field: | $\Q_{17}$ |
|
| Degree $d$: | $4$ |
|
| Ramification index $e$: | $4$ |
|
| Residue field degree $f$: | $1$ |
|
| Discriminant exponent $c$: | $3$ |
|
| Discriminant root field: | $\Q_{17}(\sqrt{17})$ | |
| Root number: | $1$ | |
| $\Aut(K/\Q_{17})$ $=$ $\Gal(K/\Q_{17})$: | $C_4$ | |
| This field is Galois and abelian over $\Q_{17}.$ | ||
| Visible Artin slopes: | $[\ ]$ | |
| Visible Swan slopes: | $[\ ]$ | |
| Means: | $\langle\ \rangle$ | |
| Rams: | $(\ )$ | |
| Jump set: | undefined | |
| Roots of unity: | $16 = (17 - 1)$ |
|
Intermediate fields
| $\Q_{17}(\sqrt{17})$ |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Canonical tower
| Unramified subfield: | $\Q_{17}$ |
|
| Relative Eisenstein polynomial: |
\( x^{4} + 153 \)
|
Ramification polygon
| Residual polynomials: | $z^3 + 4 z^2 + 6 z + 4$ |
| Associated inertia: | $1$ |
| Indices of inseparability: | $[0]$ |
Invariants of the Galois closure
| Galois degree: | $4$ |
| Galois group: | $C_4$ (as 4T1) |
| Inertia group: | $C_4$ (as 4T1) |
| Wild inertia group: | $C_1$ |
| Galois unramified degree: | $1$ |
| Galois tame degree: | $4$ |
| Galois Artin slopes: | $[\ ]$ |
| Galois Swan slopes: | $[\ ]$ |
| Galois mean slope: | $0.75$ |
| Galois splitting model: | $x^{4} - x^{3} + 11 x^{2} + x + 52$ |