Defining polynomial
\(x^{3} + 4 x + 17\) |
Invariants
Base field: | $\Q_{19}$ |
Degree $d$: | $3$ |
Ramification exponent $e$: | $1$ |
Residue field degree $f$: | $3$ |
Discriminant exponent $c$: | $0$ |
Discriminant root field: | $\Q_{19}$ |
Root number: | $1$ |
$\card{ \Gal(K/\Q_{ 19 }) }$: | $3$ |
This field is Galois and abelian over $\Q_{19}.$ | |
Visible slopes: | None |
Intermediate fields
The extension is primitive: there are no intermediate fields between this field and $\Q_{ 19 }$. |
Unramified/totally ramified tower
Unramified subfield: | 19.3.0.1 $\cong \Q_{19}(t)$ where $t$ is a root of \( x^{3} + 4 x + 17 \) |
Relative Eisenstein polynomial: | \( x - 19 \) $\ \in\Q_{19}(t)[x]$ |
Ramification polygon
The ramification polygon is trivial for unramified extensions.
Invariants of the Galois closure
Galois group: | $C_3$ (as 3T1) |
Inertia group: | trivial |
Wild inertia group: | $C_1$ |
Unramified degree: | $3$ |
Tame degree: | $1$ |
Wild slopes: | None |
Galois mean slope: | $0$ |
Galois splitting model: | $x^{3} - x^{2} - 2 x + 1$ |