Properties

Label 2.2e7_3e2.8t11.3c1
Dimension 2
Group $Q_8:C_2$
Conductor $ 2^{7} \cdot 3^{2}$
Root number not computed
Frobenius-Schur indicator 0

Related objects

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Basic invariants

Dimension:$2$
Group:$Q_8:C_2$
Conductor:$1152= 2^{7} \cdot 3^{2} $
Artin number field: Splitting field of $f= x^{8} - 6 x^{6} + 18 x^{4} - 36 x^{2} + 36 $ over $\Q$
Size of Galois orbit: 2
Smallest containing permutation representation: $Q_8:C_2$
Parity: Odd
Determinant: 1.2e3.2t1.2c1

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 73 }$ to precision 5.
Roots:
$r_{ 1 }$ $=$ $ 6 + 4\cdot 73 + 45\cdot 73^{2} + 4\cdot 73^{3} + 55\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 2 }$ $=$ $ 13 + 21\cdot 73 + 47\cdot 73^{2} + 60\cdot 73^{3} + 39\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 3 }$ $=$ $ 18 + 42\cdot 73 + 38\cdot 73^{2} + 48\cdot 73^{3} + 23\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 4 }$ $=$ $ 34 + 17\cdot 73 + 42\cdot 73^{2} + 52\cdot 73^{3} + 62\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 5 }$ $=$ $ 39 + 55\cdot 73 + 30\cdot 73^{2} + 20\cdot 73^{3} + 10\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 6 }$ $=$ $ 55 + 30\cdot 73 + 34\cdot 73^{2} + 24\cdot 73^{3} + 49\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 7 }$ $=$ $ 60 + 51\cdot 73 + 25\cdot 73^{2} + 12\cdot 73^{3} + 33\cdot 73^{4} +O\left(73^{ 5 }\right)$
$r_{ 8 }$ $=$ $ 67 + 68\cdot 73 + 27\cdot 73^{2} + 68\cdot 73^{3} + 17\cdot 73^{4} +O\left(73^{ 5 }\right)$

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

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

Character values on conjugacy classes

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