Basic invariants
Dimension: | $2$ |
Group: | $QD_{16}$ |
Conductor: | \(1156\)\(\medspace = 2^{2} \cdot 17^{2} \) |
Artin number field: | Galois closure of 8.2.26261675072.2 |
Galois orbit size: | $2$ |
Smallest permutation container: | $QD_{16}$ |
Parity: | odd |
Projective image: | $D_4$ |
Projective field: | Galois closure of 4.2.19652.1 |
Galois action
Roots of defining polynomial
The roots of $f$ are computed in $\Q_{ 229 }$ to precision 5.
Roots:
$r_{ 1 }$ | $=$ | \( 6 + 211\cdot 229 + 126\cdot 229^{2} + 52\cdot 229^{3} + 123\cdot 229^{4} +O(229^{5})\) |
$r_{ 2 }$ | $=$ | \( 85 + 35\cdot 229 + 90\cdot 229^{2} + 205\cdot 229^{3} + 6\cdot 229^{4} +O(229^{5})\) |
$r_{ 3 }$ | $=$ | \( 150 + 57\cdot 229 + 188\cdot 229^{2} + 58\cdot 229^{3} + 201\cdot 229^{4} +O(229^{5})\) |
$r_{ 4 }$ | $=$ | \( 153 + 153\cdot 229 + 8\cdot 229^{2} + 180\cdot 229^{3} + 124\cdot 229^{4} +O(229^{5})\) |
$r_{ 5 }$ | $=$ | \( 171 + 119\cdot 229 + 103\cdot 229^{2} + 173\cdot 229^{3} + 64\cdot 229^{4} +O(229^{5})\) |
$r_{ 6 }$ | $=$ | \( 178 + 120\cdot 229 + 200\cdot 229^{2} + 27\cdot 229^{3} + 111\cdot 229^{4} +O(229^{5})\) |
$r_{ 7 }$ | $=$ | \( 194 + 89\cdot 229 + 32\cdot 229^{2} + 159\cdot 229^{3} + 216\cdot 229^{4} +O(229^{5})\) |
$r_{ 8 }$ | $=$ | \( 211 + 127\cdot 229 + 165\cdot 229^{2} + 58\cdot 229^{3} + 67\cdot 229^{4} +O(229^{5})\) |
Generators of the action on the roots $r_1, \ldots, r_{ 8 }$
Cycle notation |
Character values on conjugacy classes
Size | Order | Action on $r_1, \ldots, r_{ 8 }$ | Character values | |
$c1$ | $c2$ | |||
$1$ | $1$ | $()$ | $2$ | $2$ |
$1$ | $2$ | $(1,4)(2,7)(3,5)(6,8)$ | $-2$ | $-2$ |
$4$ | $2$ | $(1,4)(3,8)(5,6)$ | $0$ | $0$ |
$2$ | $4$ | $(1,7,4,2)(3,8,5,6)$ | $0$ | $0$ |
$4$ | $4$ | $(1,3,4,5)(2,8,7,6)$ | $0$ | $0$ |
$2$ | $8$ | $(1,8,7,5,4,6,2,3)$ | $-\zeta_{8}^{3} - \zeta_{8}$ | $\zeta_{8}^{3} + \zeta_{8}$ |
$2$ | $8$ | $(1,6,7,3,4,8,2,5)$ | $\zeta_{8}^{3} + \zeta_{8}$ | $-\zeta_{8}^{3} - \zeta_{8}$ |