Properties

Label 2.2e6_3e2_5e2.8t8.2
Dimension 2
Group $QD_{16}$
Conductor $ 2^{6} \cdot 3^{2} \cdot 5^{2}$
Frobenius-Schur indicator 0

Related objects

Learn more about

Basic invariants

Dimension:$2$
Group:$QD_{16}$
Conductor:$14400= 2^{6} \cdot 3^{2} \cdot 5^{2} $
Artin number field: Splitting field of $f= x^{8} + 90 x^{4} - 675 $ over $\Q$
Size of Galois orbit: 2
Smallest containing permutation representation: $QD_{16}$
Parity: Odd

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 61 }$ to precision 15.
Roots:
$r_{ 1 }$ $=$ $ 3 + 15\cdot 61 + 60\cdot 61^{2} + 2\cdot 61^{3} + 43\cdot 61^{4} + 33\cdot 61^{5} + 20\cdot 61^{6} + 18\cdot 61^{7} + 52\cdot 61^{8} + 8\cdot 61^{9} + 15\cdot 61^{10} + 2\cdot 61^{11} + 25\cdot 61^{12} + 22\cdot 61^{13} + 20\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 2 }$ $=$ $ 4 + 22\cdot 61 + 20\cdot 61^{2} + 17\cdot 61^{3} + 29\cdot 61^{4} + 32\cdot 61^{5} + 12\cdot 61^{6} + 43\cdot 61^{7} + 39\cdot 61^{8} + 37\cdot 61^{9} + 53\cdot 61^{10} + 7\cdot 61^{11} + 39\cdot 61^{12} + 12\cdot 61^{13} + 54\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 3 }$ $=$ $ 17 + 18\cdot 61 + 16\cdot 61^{2} + 26\cdot 61^{3} + 29\cdot 61^{4} + 9\cdot 61^{5} + 5\cdot 61^{6} + 5\cdot 61^{7} + 7\cdot 61^{8} + 15\cdot 61^{9} + 55\cdot 61^{10} + 2\cdot 61^{11} + 6\cdot 61^{12} + 2\cdot 61^{13} + 32\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 4 }$ $=$ $ 28 + 45\cdot 61 + 6\cdot 61^{2} + 41\cdot 61^{3} + 7\cdot 61^{4} + 11\cdot 61^{5} + 12\cdot 61^{6} + 3\cdot 61^{7} + 37\cdot 61^{8} + 22\cdot 61^{9} + 10\cdot 61^{10} + 38\cdot 61^{11} + 5\cdot 61^{12} + 43\cdot 61^{13} + 35\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 5 }$ $=$ $ 33 + 15\cdot 61 + 54\cdot 61^{2} + 19\cdot 61^{3} + 53\cdot 61^{4} + 49\cdot 61^{5} + 48\cdot 61^{6} + 57\cdot 61^{7} + 23\cdot 61^{8} + 38\cdot 61^{9} + 50\cdot 61^{10} + 22\cdot 61^{11} + 55\cdot 61^{12} + 17\cdot 61^{13} + 25\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 6 }$ $=$ $ 44 + 42\cdot 61 + 44\cdot 61^{2} + 34\cdot 61^{3} + 31\cdot 61^{4} + 51\cdot 61^{5} + 55\cdot 61^{6} + 55\cdot 61^{7} + 53\cdot 61^{8} + 45\cdot 61^{9} + 5\cdot 61^{10} + 58\cdot 61^{11} + 54\cdot 61^{12} + 58\cdot 61^{13} + 28\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 7 }$ $=$ $ 57 + 38\cdot 61 + 40\cdot 61^{2} + 43\cdot 61^{3} + 31\cdot 61^{4} + 28\cdot 61^{5} + 48\cdot 61^{6} + 17\cdot 61^{7} + 21\cdot 61^{8} + 23\cdot 61^{9} + 7\cdot 61^{10} + 53\cdot 61^{11} + 21\cdot 61^{12} + 48\cdot 61^{13} + 6\cdot 61^{14} +O\left(61^{ 15 }\right)$
$r_{ 8 }$ $=$ $ 58 + 45\cdot 61 + 58\cdot 61^{3} + 17\cdot 61^{4} + 27\cdot 61^{5} + 40\cdot 61^{6} + 42\cdot 61^{7} + 8\cdot 61^{8} + 52\cdot 61^{9} + 45\cdot 61^{10} + 58\cdot 61^{11} + 35\cdot 61^{12} + 38\cdot 61^{13} + 40\cdot 61^{14} +O\left(61^{ 15 }\right)$

Generators of the action on the roots $r_1, \ldots, r_{ 8 }$

Cycle notation
$(1,8)(2,7)(3,6)(4,5)$
$(1,4,8,5)(2,3,7,6)$
$(2,3)(4,5)(6,7)$
$(1,2,4,3,8,7,5,6)$

Character values on conjugacy classes

SizeOrderAction on $r_1, \ldots, r_{ 8 }$ Character values
$c1$ $c2$
$1$ $1$ $()$ $2$ $2$
$1$ $2$ $(1,8)(2,7)(3,6)(4,5)$ $-2$ $-2$
$4$ $2$ $(2,3)(4,5)(6,7)$ $0$ $0$
$2$ $4$ $(1,4,8,5)(2,3,7,6)$ $0$ $0$
$4$ $4$ $(1,3,8,6)(2,5,7,4)$ $0$ $0$
$2$ $8$ $(1,2,4,3,8,7,5,6)$ $-\zeta_{8}^{3} - \zeta_{8}$ $\zeta_{8}^{3} + \zeta_{8}$
$2$ $8$ $(1,7,4,6,8,2,5,3)$ $\zeta_{8}^{3} + \zeta_{8}$ $-\zeta_{8}^{3} - \zeta_{8}$
The blue line marks the conjugacy class containing complex conjugation.