Defining polynomial
\(x^{12} + 4 x^{11} + 2 x^{6} + 4 x^{5} + 4 x^{3} + 6 x^{2} + 4 x + 14\) |
Invariants
Base field: | $\Q_{2}$ |
Degree $d$: | $12$ |
Ramification exponent $e$: | $12$ |
Residue field degree $f$: | $1$ |
Discriminant exponent $c$: | $24$ |
Discriminant root field: | $\Q_{2}(\sqrt{-1})$ |
Root number: | $-i$ |
$\card{ \Aut(K/\Q_{ 2 }) }$: | $2$ |
This field is not Galois over $\Q_{2}.$ | |
Visible slopes: | $[4/3, 3]$ |
Intermediate fields
2.3.2.1, 2.6.6.8 |
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: | \( x^{12} + 4 x^{11} + 2 x^{6} + 4 x^{5} + 4 x^{3} + 6 x^{2} + 4 x + 14 \) |
Ramification polygon
Residual polynomials: | $z + 1$,$z^{2} + 1$,$z^{8} + z^{4} + 1$ |
Associated inertia: | $1$,$1$,$2$ |
Indices of inseparability: | $[13, 2, 0]$ |
Invariants of the Galois closure
Galois group: | $C_2^2.\GL(2,\mathbb{Z}/4)$ (as 12T149) |
Inertia group: | $C_2^4.A_4$ (as 12T92) |
Wild inertia group: | $C_4^2:C_2^2$ |
Unramified degree: | $2$ |
Tame degree: | $3$ |
Wild slopes: | $[4/3, 4/3, 2, 7/3, 7/3, 3]$ |
Galois mean slope: | $247/96$ |
Galois splitting model: | $x^{12} - 6 x^{10} + 25 x^{8} - 132 x^{6} + 495 x^{4} - 1100 x^{2} + 1375$ |