Defining polynomial
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\(x^{15} - 15 x^{12} - 75 x^{11} + 15 x^{10} + 1800 x^{9} + 2250 x^{8} + 525 x^{7} + 18375 x^{6} + 94575 x^{5} + 154125 x^{4} + 113625 x^{3} + 3000 x^{2} - 1875 x + 125\)
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Invariants
| Base field: | $\Q_{5}$ |
| Degree $d$: | $15$ |
| Ramification exponent $e$: | $5$ |
| Residue field degree $f$: | $3$ |
| Discriminant exponent $c$: | $15$ |
| Discriminant root field: | $\Q_{5}(\sqrt{5})$ |
| Root number: | $-1$ |
| $\card{ \Aut(K/\Q_{ 5 }) }$: | $1$ |
| This field is not Galois over $\Q_{5}.$ | |
| Visible slopes: | $[5/4]$ |
Intermediate fields
| 5.3.0.1 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Unramified/totally ramified tower
| Unramified subfield: | 5.3.0.1 $\cong \Q_{5}(t)$ where $t$ is a root of
\( x^{3} + 3 x + 3 \)
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| Relative Eisenstein polynomial: |
\( x^{5} + \left(10 t^{2} + 15 t + 15\right) x^{2} + \left(20 t^{2} + 15\right) x + 5 \)
$\ \in\Q_{5}(t)[x]$
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Ramification polygon
| Residual polynomials: | $z + t^{2} + 2$ |
| Associated inertia: | $1$ |
| Indices of inseparability: | $[1, 0]$ |
Invariants of the Galois closure
| Galois group: | $C_5^2:C_{12}$ (as 15T19) |
| Inertia group: | Intransitive group isomorphic to $C_5:F_5$ |
| Wild inertia group: | $C_5^2$ |
| Unramified degree: | $3$ |
| Tame degree: | $4$ |
| Wild slopes: | $[5/4, 5/4]$ |
| Galois mean slope: | $123/100$ |
| Galois splitting model: |
$x^{15} + 5 x^{13} - 25 x^{11} - 2 x^{10} - 100 x^{9} - 100 x^{8} + 25 x^{7} - 280 x^{6} + 214 x^{5} - 250 x^{4} + 65 x^{3} - 100 x^{2} - 20 x + 8$
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