Properties

Label 2.3_7_439.4t3.2
Dimension 2
Group $D_{4}$
Conductor $ 3 \cdot 7 \cdot 439 $
Frobenius-Schur indicator 1

Related objects

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Basic invariants

Dimension:$2$
Group:$D_{4}$
Conductor:$9219= 3 \cdot 7 \cdot 439 $
Artin number field: Splitting field of $f= x^{4} + 55 x^{2} - 12 $ over $\Q$
Size of Galois orbit: 1
Smallest containing permutation representation: $D_{4}$
Parity: Odd

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 31 }$ to precision 7.
Roots:
$r_{ 1 }$ $=$ $ 7 + 28\cdot 31 + 31^{2} + 10\cdot 31^{3} + 7\cdot 31^{4} + 17\cdot 31^{5} + 28\cdot 31^{6} +O\left(31^{ 7 }\right)$
$r_{ 2 }$ $=$ $ 12 + 4\cdot 31 + 30\cdot 31^{2} + 3\cdot 31^{3} + 25\cdot 31^{4} + 20\cdot 31^{5} + 20\cdot 31^{6} +O\left(31^{ 7 }\right)$
$r_{ 3 }$ $=$ $ 19 + 26\cdot 31 + 27\cdot 31^{3} + 5\cdot 31^{4} + 10\cdot 31^{5} + 10\cdot 31^{6} +O\left(31^{ 7 }\right)$
$r_{ 4 }$ $=$ $ 24 + 2\cdot 31 + 29\cdot 31^{2} + 20\cdot 31^{3} + 23\cdot 31^{4} + 13\cdot 31^{5} + 2\cdot 31^{6} +O\left(31^{ 7 }\right)$

Generators of the action on the roots $r_1, \ldots, r_{ 4 }$

Cycle notation
$(1,2)(3,4)$
$(2,3)$

Character values on conjugacy classes

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