Defining polynomial
| \( x^{7} + 21 x^{6} + 7 \) |
Invariants
| Base field: | $\Q_{7}$ |
| Degree $d$ : | $7$ |
| Ramification exponent $e$ : | $7$ |
| Residue field degree $f$ : | $1$ |
| Discriminant exponent $c$ : | $12$ |
| Discriminant root field: | $\Q_{7}$ |
| Root number: | $1$ |
| $|\Aut(K/\Q_{ 7 })|$: | $1$ |
| This field is not Galois over $\Q_{7}$. | |
Intermediate fields
| The extension is primitive: there are no intermediate fields between this field and $\Q_{ 7 }$. |
Unramified/totally ramified tower
| Unramified subfield: | $\Q_{7}$ |
| Relative Eisenstein polynomial: | \( x^{7} + 21 x^{6} + 7 \) |