Defining polynomial
| \( x^{8} + 12 x^{6} + 8 x^{5} + 56 \) |
Invariants
| Base field: | $\Q_{2}$ |
| Degree $d$ : | $8$ |
| Ramification exponent $e$ : | $8$ |
| Residue field degree $f$ : | $1$ |
| Discriminant exponent $c$ : | $22$ |
| Discriminant root field: | $\Q_{2}(\sqrt{*})$ |
| Root number: | $1$ |
| $|\Aut(K/\Q_{ 2 })|$: | $2$ |
| This field is not Galois over $\Q_{2}$. | |
Intermediate fields
| 2.4.8.8 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Unramified/totally ramified tower
| Unramified subfield: | $\Q_{2}$ |
| Relative Eisenstein polynomial: | \( x^{8} + 12 x^{7} + 480 x^{6} + 64 x^{5} + 1512 x^{4} + 1764 x^{2} + 686 \) |
Invariants of the Galois closure
| Galois group: | $\GL(2,3)$ (as 8T23) |
| Inertia group: | $\SL(2,3)$ |
| Unramified degree: | $2$ |
| Tame degree: | $3$ |
| Wild slopes: | [8/3, 8/3, 7/2] |
| Galois mean slope: | $17/6$ |
| Galois splitting model: | $x^{8} + 8 x^{6} + 18 x^{4} - 3$ |