Defining polynomial
| \( x^{12} - 2 x^{10} + 4 x^{8} + 4 x^{5} - 2 x^{4} + 4 x^{2} - 2 \) |
Invariants
| Base field: | $\Q_{2}$ |
| Degree $d$ : | $12$ |
| Ramification exponent $e$ : | $12$ |
| Residue field degree $f$ : | $1$ |
| Discriminant exponent $c$ : | $28$ |
| Discriminant root field: | $\Q_{2}(\sqrt{*})$ |
| Root number: | $1$ |
| $|\Aut(K/\Q_{ 2 })|$: | $2$ |
| This field is not Galois over $\Q_{2}$. | |
Intermediate fields
| 2.3.2.1, 2.6.10.8 |
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: | \( x^{12} - 2 x^{10} + 4 x^{8} + 4 x^{5} - 2 x^{4} + 4 x^{2} - 2 \) |
Invariants of the Galois closure
| Galois group: | $\GL(2,Z/4)$ (as 12T49) |
| Inertia group: | $C_2^2 \times A_4$ |
| Unramified degree: | $2$ |
| Tame degree: | $3$ |
| Wild slopes: | [2, 8/3, 8/3, 3] |
| Galois mean slope: | $8/3$ |
| Galois splitting model: | $x^{12} - 12 x^{10} - 20 x^{9} + 39 x^{8} + 228 x^{7} + 156 x^{6} - 864 x^{5} - 1335 x^{4} + 844 x^{3} + 2508 x^{2} + 972 x - 227$ |