Basic invariants
Galois action
Roots of defining polynomial
The roots of $f$ are computed in an extension of $\Q_{ 13 }$ to precision 5.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 13 }$: $ x^{3} + 2 x + 11 $
Roots:
| $r_{ 1 }$ |
$=$ |
$ 6 a^{2} + 7 a + 11 + \left(8 a^{2} + 6 a + 7\right)\cdot 13 + \left(4 a^{2} + 10\right)\cdot 13^{2} + \left(5 a^{2} + 7\right)\cdot 13^{3} + \left(10 a^{2} + 3 a + 12\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 2 }$ |
$=$ |
$ 8 a + 1 + \left(4 a^{2} + 8 a + 11\right)\cdot 13 + \left(8 a^{2} + 9 a + 9\right)\cdot 13^{2} + \left(10 a^{2} + 3\right)\cdot 13^{3} + \left(12 a^{2} + 6 a + 11\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 3 }$ |
$=$ |
$ 11 a^{2} + 4 a + 3 + \left(6 a^{2} + 11\right)\cdot 13 + \left(6 a^{2} + 11 a + 9\right)\cdot 13^{2} + \left(5 a^{2} + 6 a + 12\right)\cdot 13^{3} + \left(7 a^{2} + 7 a + 3\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 4 }$ |
$=$ |
$ 7 a^{2} + 2 a + 8 + \left(5 a^{2} + 10 a + 12\right)\cdot 13 + \left(9 a^{2} + 5 a + 3\right)\cdot 13^{2} + \left(11 a^{2} + 4 a + 3\right)\cdot 13^{3} + \left(8 a^{2} + 7 a + 6\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 5 }$ |
$=$ |
$ 12 a^{2} + a + 4 + \left(4 a^{2} + 8 a + 12\right)\cdot 13 + \left(5 a^{2} + 5\right)\cdot 13^{2} + \left(4 a^{2} + 4 a + 8\right)\cdot 13^{3} + \left(a^{2} + 11 a + 4\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 6 }$ |
$=$ |
$ 4 a + 3 + \left(12 a^{2} + 9 a + 8\right)\cdot 13 + \left(11 a^{2} + 6 a + 11\right)\cdot 13^{2} + \left(8 a^{2} + 8 a + 3\right)\cdot 13^{3} + \left(6 a^{2} + 2 a + 3\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 7 }$ |
$=$ |
$ 5 a^{2} + 5 a + 8 + \left(6 a^{2} + a + 10\right)\cdot 13 + \left(a^{2} + 9 a + 11\right)\cdot 13^{2} + \left(3 a^{2} + 4 a\right)\cdot 13^{3} + \left(8 a^{2} + a + 5\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 8 }$ |
$=$ |
$ a^{2} + 4 a + 11 + \left(4 a^{2} + 9 a + 6\right)\cdot 13 + \left(12 a^{2} + 2 a + 6\right)\cdot 13^{2} + \left(10 a^{2} + 8 a + 8\right)\cdot 13^{3} + \left(11 a^{2} + 8 a + 5\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
| $r_{ 9 }$ |
$=$ |
$ 10 a^{2} + 4 a + 6 + \left(12 a^{2} + 11 a + 10\right)\cdot 13 + \left(4 a^{2} + 5 a + 7\right)\cdot 13^{2} + \left(4 a^{2} + a + 2\right)\cdot 13^{3} + \left(10 a^{2} + 4 a + 12\right)\cdot 13^{4} +O\left(13^{ 5 }\right)$ |
Generators of the action on the roots
$r_1, \ldots, r_{ 9 }$
| Cycle notation |
| $(1,8)(2,6)(3,7)(4,5)$ |
| $(1,6,4)(2,8,5)(3,9,7)$ |
| $(1,5,7,6,2,3,4,8,9)$ |
Character values on conjugacy classes
| Size | Order | Action on
$r_1, \ldots, r_{ 9 }$
| Character value |
| $1$ | $1$ | $()$ | $2$ |
| $9$ | $2$ | $(1,8)(2,6)(3,7)(4,5)$ | $0$ |
| $2$ | $3$ | $(1,6,4)(2,8,5)(3,9,7)$ | $-1$ |
| $2$ | $9$ | $(1,5,7,6,2,3,4,8,9)$ | $\zeta_{9}^{5} + \zeta_{9}^{4}$ |
| $2$ | $9$ | $(1,7,2,4,9,5,6,3,8)$ | $-\zeta_{9}^{5} - \zeta_{9}^{2} + \zeta_{9}$ |
| $2$ | $9$ | $(1,2,9,6,8,7,4,5,3)$ | $-\zeta_{9}^{4} + \zeta_{9}^{2} - \zeta_{9}$ |
The blue line marks the conjugacy class containing complex conjugation.
