Defining polynomial
| \( x^{8} + 49 x^{4} - 1029 x^{2} + 12005 \) |
Invariants
| Base field: | $\Q_{7}$ |
| Degree $d$ : | $8$ |
| Ramification exponent $e$ : | $2$ |
| Residue field degree $f$ : | $4$ |
| Discriminant exponent $c$ : | $4$ |
| Discriminant root field: | $\Q_{7}(\sqrt{*})$ |
| Root number: | $1$ |
| $|\Gal(K/\Q_{ 7 })|$: | $8$ |
| This field is Galois and abelian over $\Q_{7}$. | |
Intermediate fields
| $\Q_{7}(\sqrt{*})$, 7.4.0.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Unramified/totally ramified tower
| Unramified subfield: | 7.4.0.1 $\cong \Q_{7}(t)$ where $t$ is a root of \( x^{4} + x^{2} - 3 x + 5 \) |
| Relative Eisenstein polynomial: | $ x^{2} - 7 t \in\Q_{7}(t)[x]$ |
Invariants of the Galois closure
| Galois group: | $C_8$ (as 8T1) |
| Inertia group: | Intransitive group isomorphic to $C_2$ |
| Unramified degree: | $4$ |
| Tame degree: | $2$ |
| Wild slopes: | None |
| Galois mean slope: | $1/2$ |
| Galois splitting model: | $x^{8} - x^{7} + 27 x^{6} - 28 x^{5} + 151 x^{4} - 350 x^{3} + 500 x^{2} - 846 x + 1157$ |