Properties

Label 2.3_37e2.8t8.1c1
Dimension 2
Group $QD_{16}$
Conductor $ 3 \cdot 37^{2}$
Root number not computed
Frobenius-Schur indicator 0

Related objects

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Basic invariants

Dimension:$2$
Group:$QD_{16}$
Conductor:$4107= 3 \cdot 37^{2} $
Artin number field: Splitting field of $f= x^{8} - 2 x^{7} + 2 x^{6} + 8 x^{5} - 33 x^{4} + 75 x^{3} - 126 x^{2} + 99 x - 27 $ over $\Q$
Size of Galois orbit: 2
Smallest containing permutation representation: $QD_{16}$
Parity: Odd
Determinant: 1.3.2t1.1c1

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 127 }$ to precision 5.
Roots:
$r_{ 1 }$ $=$ $ 6 + 33\cdot 127 + 30\cdot 127^{2} + 97\cdot 127^{3} + 99\cdot 127^{4} +O\left(127^{ 5 }\right)$
$r_{ 2 }$ $=$ $ 8 + 65\cdot 127 + 51\cdot 127^{2} + 61\cdot 127^{3} + 36\cdot 127^{4} +O\left(127^{ 5 }\right)$
$r_{ 3 }$ $=$ $ 10 + 25\cdot 127 + 72\cdot 127^{2} + 89\cdot 127^{3} +O\left(127^{ 5 }\right)$
$r_{ 4 }$ $=$ $ 42 + 113\cdot 127 + 39\cdot 127^{2} + 83\cdot 127^{3} + 102\cdot 127^{4} +O\left(127^{ 5 }\right)$
$r_{ 5 }$ $=$ $ 47 + 106\cdot 127 + 113\cdot 127^{2} + 89\cdot 127^{3} + 67\cdot 127^{4} +O\left(127^{ 5 }\right)$
$r_{ 6 }$ $=$ $ 68 + 50\cdot 127 + 90\cdot 127^{2} + 19\cdot 127^{3} + 114\cdot 127^{4} +O\left(127^{ 5 }\right)$
$r_{ 7 }$ $=$ $ 87 + 26\cdot 127 + 85\cdot 127^{2} + 113\cdot 127^{3} + 22\cdot 127^{4} +O\left(127^{ 5 }\right)$
$r_{ 8 }$ $=$ $ 115 + 87\cdot 127 + 24\cdot 127^{2} + 80\cdot 127^{3} + 63\cdot 127^{4} +O\left(127^{ 5 }\right)$

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

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

Character values on conjugacy classes

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