Defining polynomial
\(x^{12} + 8 x^{10} + 4 x^{8} + 8 x^{5} + 12 x^{2} + 8 x + 18\) |
Invariants
Base field: | $\Q_{2}$ |
Degree $d$: | $12$ |
Ramification exponent $e$: | $12$ |
Residue field degree $f$: | $1$ |
Discriminant exponent $c$: | $35$ |
Discriminant root field: | $\Q_{2}(\sqrt{2\cdot 5})$ |
Root number: | $-1$ |
$\card{ \Aut(K/\Q_{ 2 }) }$: | $4$ |
This field is not Galois over $\Q_{2}.$ | |
Visible slopes: | $[3, 4]$ |
Intermediate fields
2.3.2.1, 2.6.11.8 |
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: | \( x^{12} + 8 x^{10} + 4 x^{8} + 8 x^{5} + 12 x^{2} + 8 x + 18 \) |
Ramification polygon
Residual polynomials: | $z + 1$,$z^{2} + 1$,$z^{8} + z^{4} + 1$ |
Associated inertia: | $1$,$1$,$2$ |
Indices of inseparability: | $[24, 12, 0]$ |
Invariants of the Galois closure
Galois group: | $C_4\wr S_3$ (as 12T150) |
Inertia group: | $C_4\wr C_3$ (as 12T94) |
Wild inertia group: | $C_4^3$ |
Unramified degree: | $2$ |
Tame degree: | $3$ |
Wild slopes: | $[8/3, 8/3, 3, 11/3, 11/3, 4]$ |
Galois mean slope: | $355/96$ |
Galois splitting model: | $x^{12} - 36 x^{8} + 148 x^{6} - 186 x^{4} + 90$ |