Defining polynomial
|
\(x^{18} + 3 x^{8} + 3 x^{3} + 3\)
|
Invariants
| Base field: | $\Q_{3}$ |
| Degree $d$: | $18$ |
| Ramification index $e$: | $18$ |
| Residue field degree $f$: | $1$ |
| Discriminant exponent $c$: | $25$ |
| Discriminant root field: | $\Q_{3}(\sqrt{3\cdot 2})$ |
| Root number: | $-i$ |
| $\Aut(K/\Q_{3})$: | $C_1$ |
| This field is not Galois over $\Q_{3}.$ | |
| Visible Artin slopes: | $[\frac{5}{4}, \frac{19}{12}]$ |
| Visible Swan slopes: | $[\frac{1}{4},\frac{7}{12}]$ |
| Means: | $\langle\frac{1}{6}, \frac{4}{9}\rangle$ |
| Rams: | $(\frac{1}{2}, \frac{5}{2})$ |
| Jump set: | $[1, 4, 17]$ |
| Roots of unity: | $6 = (3 - 1) \cdot 3$ |
Intermediate fields
| $\Q_{3}(\sqrt{3\cdot 2})$, 3.1.6.6a1.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Canonical tower
| Unramified subfield: | $\Q_{3}$ |
| Relative Eisenstein polynomial: |
\( x^{18} + 3 x^{8} + 3 x^{3} + 3 \)
|
Ramification polygon
| Residual polynomials: | $z^9 + 2$,$2 z^3 + 2$,$2 z + 1$ |
| Associated inertia: | $1$,$1$,$1$ |
| Indices of inseparability: | $[8, 3, 0]$ |
Invariants of the Galois closure
| Galois degree: | $5832$ |
| Galois group: | $C_3^4.\SOPlus(4,2)$ (as 18T505) |
| Inertia group: | not computed |
| Wild inertia group: | not computed |
| Galois unramified degree: | not computed |
| Galois tame degree: | not computed |
| Galois Artin slopes: | not computed |
| Galois Swan slopes: | not computed |
| Galois mean slope: | not computed |
| Galois splitting model: | not computed |