Defining polynomial
|
$( x^{2} + 145 x + 2 )^{8} + 596 x + 21903$
|
Invariants
| Base field: | $\Q_{149}$ |
|
| Degree $d$: | $16$ |
|
| Ramification index $e$: | $8$ |
|
| Residue field degree $f$: | $2$ |
|
| Discriminant exponent $c$: | $14$ |
|
| Discriminant root field: | $\Q_{149}$ | |
| Root number: | $-1$ | |
| $\Aut(K/\Q_{149})$ $=$ $\Gal(K/\Q_{149})$: | $\OD_{16}$ | |
| This field is Galois over $\Q_{149}.$ | ||
| Visible Artin slopes: | $[\ ]$ | |
| Visible Swan slopes: | $[\ ]$ | |
| Means: | $\langle\ \rangle$ | |
| Rams: | $(\ )$ | |
| Jump set: | undefined | |
| Roots of unity: | $22200 = (149^{ 2 } - 1)$ |
|
Intermediate fields
| $\Q_{149}(\sqrt{2})$, $\Q_{149}(\sqrt{149})$, $\Q_{149}(\sqrt{149\cdot 2})$, 149.2.2.2a1.2, 149.1.4.3a1.2, 149.1.4.3a1.4, 149.2.4.6a1.4, 149.1.8.7a1.4 x2 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Canonical tower
| Unramified subfield: | $\Q_{149}(\sqrt{2})$ $\cong \Q_{149}(t)$ where $t$ is a root of
\( x^{2} + 145 x + 2 \)
|
|
| Relative Eisenstein polynomial: |
\( x^{8} + 596 t + 21903 \)
$\ \in\Q_{149}(t)[x]$
|
Ramification polygon
| Residual polynomials: | $z^7 + 8 z^6 + 28 z^5 + 56 z^4 + 70 z^3 + 56 z^2 + 28 z + 8$ |
| Associated inertia: | $1$ |
| Indices of inseparability: | $[0]$ |
Invariants of the Galois closure
| Galois degree: | $16$ |
| Galois group: | $\OD_{16}$ (as 16T6) |
| Inertia group: | Intransitive group isomorphic to $C_8$ |
| Wild inertia group: | $C_1$ |
| Galois unramified degree: | $2$ |
| Galois tame degree: | $8$ |
| Galois Artin slopes: | $[\ ]$ |
| Galois Swan slopes: | $[\ ]$ |
| Galois mean slope: | $0.875$ |
| Galois splitting model: | not computed |