Basic invariants
Galois action
Roots of defining polynomial
The roots of $f$ are computed in $\Q_{ 19 }$ to precision 7.
Roots:
| $r_{ 1 }$ |
$=$ |
$ 3 + 9\cdot 19 + 17\cdot 19^{2} + 17\cdot 19^{3} + 5\cdot 19^{4} + 15\cdot 19^{5} + 15\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
| $r_{ 2 }$ |
$=$ |
$ 5 + 14\cdot 19 + 3\cdot 19^{2} + 10\cdot 19^{4} + 18\cdot 19^{5} + 18\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
| $r_{ 3 }$ |
$=$ |
$ 6 + 5\cdot 19 + 2\cdot 19^{2} + 12\cdot 19^{3} + 18\cdot 19^{4} + 8\cdot 19^{5} + 15\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
| $r_{ 4 }$ |
$=$ |
$ 7 + 14\cdot 19 + 14\cdot 19^{2} + 6\cdot 19^{3} + 15\cdot 19^{4} + 7\cdot 19^{5} + 4\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
| $r_{ 5 }$ |
$=$ |
$ 12 + 4\cdot 19 + 4\cdot 19^{2} + 12\cdot 19^{3} + 3\cdot 19^{4} + 11\cdot 19^{5} + 14\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
| $r_{ 6 }$ |
$=$ |
$ 13 + 13\cdot 19 + 16\cdot 19^{2} + 6\cdot 19^{3} + 10\cdot 19^{5} + 3\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
| $r_{ 7 }$ |
$=$ |
$ 14 + 4\cdot 19 + 15\cdot 19^{2} + 18\cdot 19^{3} + 8\cdot 19^{4} +O\left(19^{ 7 }\right)$ |
| $r_{ 8 }$ |
$=$ |
$ 16 + 9\cdot 19 + 19^{2} + 19^{3} + 13\cdot 19^{4} + 3\cdot 19^{5} + 3\cdot 19^{6} +O\left(19^{ 7 }\right)$ |
Generators of the action on the roots
$r_1, \ldots, r_{ 8 }$
| Cycle notation |
| $(1,8)(2,7)(3,6)(4,5)$ |
| $(1,4,8,5)(2,6,7,3)$ |
| $(1,4,8,5)(2,3,7,6)$ |
| $(1,7,8,2)(3,4,6,5)$ |
Character values on conjugacy classes
| Size | Order | Action on
$r_1, \ldots, r_{ 8 }$
| Character values |
| | |
$c1$ |
$c2$ |
| $1$ |
$1$ |
$()$ |
$2$ |
$2$ |
| $1$ |
$2$ |
$(1,8)(2,7)(3,6)(4,5)$ |
$-2$ |
$-2$ |
| $2$ |
$2$ |
$(2,7)(3,6)$ |
$0$ |
$0$ |
| $2$ |
$2$ |
$(1,7)(2,8)(3,5)(4,6)$ |
$0$ |
$0$ |
| $2$ |
$2$ |
$(1,6)(2,4)(3,8)(5,7)$ |
$0$ |
$0$ |
| $1$ |
$4$ |
$(1,4,8,5)(2,3,7,6)$ |
$-2 \zeta_{4}$ |
$2 \zeta_{4}$ |
| $1$ |
$4$ |
$(1,5,8,4)(2,6,7,3)$ |
$2 \zeta_{4}$ |
$-2 \zeta_{4}$ |
| $2$ |
$4$ |
$(1,4,8,5)(2,6,7,3)$ |
$0$ |
$0$ |
| $2$ |
$4$ |
$(1,7,8,2)(3,4,6,5)$ |
$0$ |
$0$ |
| $2$ |
$4$ |
$(1,6,8,3)(2,5,7,4)$ |
$0$ |
$0$ |
The blue line marks the conjugacy class containing complex conjugation.
