Defining polynomial
|
\(x^{17} + 2\)
|
Invariants
| Base field: | $\Q_{2}$ |
| Degree $d$: | $17$ |
| Ramification exponent $e$: | $17$ |
| Residue field degree $f$: | $1$ |
| Discriminant exponent $c$: | $16$ |
| Discriminant root field: | $\Q_{2}$ |
| Root number: | $1$ |
| $\card{ \Aut(K/\Q_{ 2 }) }$: | $1$ |
| This field is not Galois over $\Q_{2}.$ | |
| Visible slopes: | None |
Intermediate fields
| The extension is primitive: there are no intermediate fields between this field and $\Q_{ 2 }$. |
Unramified/totally ramified tower
| Unramified subfield: | $\Q_{2}$ |
| Relative Eisenstein polynomial: |
\( x^{17} + 2 \)
|
Ramification polygon
| Residual polynomials: | $z^{16} + z^{15} + 1$ |
| Associated inertia: | $8$ |
| Indices of inseparability: | $[0]$ |
Invariants of the Galois closure
| Galois group: | $C_{17}:C_8$ (as 17T4) |
| Inertia group: | $C_{17}$ (as 17T1) |
| Wild inertia group: | $C_1$ |
| Unramified degree: | $8$ |
| Tame degree: | $17$ |
| Wild slopes: | None |
| Galois mean slope: | $16/17$ |
| Galois splitting model: | Not computed |