Properties

Label 2.2e2_5e2_17e2.4t3.2
Dimension 2
Group $D_{4}$
Conductor $ 2^{2} \cdot 5^{2} \cdot 17^{2}$
Frobenius-Schur indicator 1

Related objects

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Basic invariants

Dimension:$2$
Group:$D_{4}$
Conductor:$28900= 2^{2} \cdot 5^{2} \cdot 17^{2} $
Artin number field: Splitting field of $f= x^{4} - 2 x^{3} + 10 x^{2} + 76 x + 84 $ 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 $\Q_{ 13 }$ to precision 7.
Roots:
$r_{ 1 }$ $=$ $ 1 + 4\cdot 13^{2} + 12\cdot 13^{3} + 8\cdot 13^{4} + 13^{5} + 2\cdot 13^{6} +O\left(13^{ 7 }\right)$
$r_{ 2 }$ $=$ $ 3 + 4\cdot 13 + 6\cdot 13^{2} + 4\cdot 13^{3} + 8\cdot 13^{4} + 11\cdot 13^{5} + 9\cdot 13^{6} +O\left(13^{ 7 }\right)$
$r_{ 3 }$ $=$ $ 4 + 12\cdot 13^{2} + 5\cdot 13^{3} + 2\cdot 13^{4} + 2\cdot 13^{5} + 3\cdot 13^{6} +O\left(13^{ 7 }\right)$
$r_{ 4 }$ $=$ $ 7 + 8\cdot 13 + 3\cdot 13^{2} + 3\cdot 13^{3} + 6\cdot 13^{4} + 10\cdot 13^{5} + 10\cdot 13^{6} +O\left(13^{ 7 }\right)$

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

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

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.