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