Defining polynomial
\(x^{14} + 14 x^{3} + 7 x^{2} + 21\) |
Invariants
Base field: | $\Q_{7}$ |
Degree $d$: | $14$ |
Ramification exponent $e$: | $14$ |
Residue field degree $f$: | $1$ |
Discriminant exponent $c$: | $15$ |
Discriminant root field: | $\Q_{7}(\sqrt{7})$ |
Root number: | $-i$ |
$\card{ \Aut(K/\Q_{ 7 }) }$: | $2$ |
This field is not Galois over $\Q_{7}.$ | |
Visible slopes: | $[7/6]$ |
Intermediate fields
$\Q_{7}(\sqrt{7})$, 7.7.7.5 |
Fields in the database are given up to isomorphism. Isomorphic intermediate fields are shown with their multiplicities.
Unramified/totally ramified tower
Unramified subfield: | $\Q_{7}$ |
Relative Eisenstein polynomial: | \( x^{14} + 14 x^{3} + 7 x^{2} + 21 \) |
Ramification polygon
Residual polynomials: | $2z^{2} + 4$,$z^{7} + 2$ |
Associated inertia: | $2$,$1$ |
Indices of inseparability: | $[2, 0]$ |