Defining polynomial
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\(x^{15} + 15 x^{10} + 300 x^{9} + 300 x^{8} + 75 x^{7} - 3000 x^{6} - 4425 x^{5} - 750 x^{4} + 1125 x^{3} + 375 x^{2} + 125\)
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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: | $\Q_{5}(\sqrt{5\cdot 2})$ |
| 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: |
\( x^{5} + 10 t x^{2} + 5 t x + 5 \)
$\ \in\Q_{5}(t)[x]$
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Ramification polygon
| Residual polynomials: | $z + 4t$ |
| 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: |
$x^{15} + 20 x^{13} - 20 x^{12} + 120 x^{11} + 220 x^{10} - 150 x^{9} - 2980 x^{8} + 6595 x^{7} - 13520 x^{6} - 17266 x^{5} + 125300 x^{4} - 260735 x^{3} + 802280 x^{2} - 766320 x + 208832$
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