Defining polynomial
\(x^{14} + 2 x^{10} + 2 x^{9} + 2 x^{7} + 2 x^{5} + 2\) |
Invariants
Base field: | $\Q_{2}$ |
Degree $d$: | $14$ |
Ramification exponent $e$: | $14$ |
Residue field degree $f$: | $1$ |
Discriminant exponent $c$: | $18$ |
Discriminant root field: | $\Q_{2}$ |
Root number: | $1$ |
$\card{ \Aut(K/\Q_{ 2 }) }$: | $2$ |
This field is not Galois over $\Q_{2}.$ | |
Visible slopes: | $[12/7]$ |
Intermediate fields
2.7.6.1 |
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: | \( x^{14} + 2 x^{10} + 2 x^{9} + 2 x^{7} + 2 x^{5} + 2 \) |
Ramification polygon
Residual polynomials: | $z + 1$,$z^{12} + z^{10} + z^{8} + z^{6} + z^{4} + z^{2} + 1$ |
Associated inertia: | $1$,$3$ |
Indices of inseparability: | $[5, 0]$ |
Invariants of the Galois closure
Galois group: | $F_8:C_3$ (as 14T11) |
Inertia group: | $F_8$ (as 14T6) |
Wild inertia group: | $C_2^3$ |
Unramified degree: | $3$ |
Tame degree: | $7$ |
Wild slopes: | $[12/7, 12/7, 12/7]$ |
Galois mean slope: | $45/28$ |
Galois splitting model: | $x^{14} - 14 x^{10} - 112 x^{9} - 238 x^{8} + 342 x^{7} + 1176 x^{6} + 1862 x^{5} - 1372 x^{4} - 2324 x^{3} - 4032 x^{2} + 1148 x + 190$ |