Properties

Label 2.2e2_13e2_17e2.4t3.2
Dimension 2
Group $D_{4}$
Conductor $ 2^{2} \cdot 13^{2} \cdot 17^{2}$
Frobenius-Schur indicator 1

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Basic invariants

Dimension:$2$
Group:$D_{4}$
Conductor:$195364= 2^{2} \cdot 13^{2} \cdot 17^{2} $
Artin number field: Splitting field of $f= x^{4} - 2 x^{3} + 10 x^{2} + 212 x + 628 $ 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 $\Q_{ 89 }$ to precision 5.
Roots:
$r_{ 1 }$ $=$ $ 10 + 80\cdot 89 + 42\cdot 89^{2} + 17\cdot 89^{3} + 28\cdot 89^{4} +O\left(89^{ 5 }\right)$
$r_{ 2 }$ $=$ $ 52 + 32\cdot 89 + 29\cdot 89^{2} + 17\cdot 89^{3} + 67\cdot 89^{4} +O\left(89^{ 5 }\right)$
$r_{ 3 }$ $=$ $ 57 + 26\cdot 89 + 89^{2} + 38\cdot 89^{3} + 53\cdot 89^{4} +O\left(89^{ 5 }\right)$
$r_{ 4 }$ $=$ $ 61 + 38\cdot 89 + 15\cdot 89^{2} + 16\cdot 89^{3} + 29\cdot 89^{4} +O\left(89^{ 5 }\right)$

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

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

Character values on conjugacy classes

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