Properties

Label 2.2e3_3_73.4t3.9
Dimension 2
Group $D_4$
Conductor $ 2^{3} \cdot 3 \cdot 73 $
Frobenius-Schur indicator 1

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Basic invariants

Dimension:$2$
Group:$D_4$
Conductor:$1752= 2^{3} \cdot 3 \cdot 73 $
Artin number field: Splitting field of $f= x^{8} - 4 x^{7} + 50 x^{6} - 136 x^{5} + 347 x^{4} - 472 x^{3} + 406 x^{2} - 192 x + 48 $ over $\Q$
Size of Galois orbit: 1
Smallest containing permutation representation: $D_{4}$
Parity: Even

Galois action

Roots of defining polynomial

The roots of $f$ are computed in $\Q_{ 23 }$ to precision 7.
Roots:
$r_{ 1 }$ $=$ $ 2 + 12\cdot 23 + 14\cdot 23^{2} + 11\cdot 23^{3} + 18\cdot 23^{4} + 16\cdot 23^{5} + 11\cdot 23^{6} +O\left(23^{ 7 }\right)$
$r_{ 2 }$ $=$ $ 6 + 21\cdot 23^{2} + 8\cdot 23^{4} + 18\cdot 23^{5} + 23^{6} +O\left(23^{ 7 }\right)$
$r_{ 3 }$ $=$ $ 10 + 4\cdot 23 + 14\cdot 23^{2} + 23^{3} + 13\cdot 23^{4} + 11\cdot 23^{5} + 22\cdot 23^{6} +O\left(23^{ 7 }\right)$
$r_{ 4 }$ $=$ $ 11 + 16\cdot 23 + 16\cdot 23^{2} + 17\cdot 23^{3} + 5\cdot 23^{4} + 11\cdot 23^{5} + 18\cdot 23^{6} +O\left(23^{ 7 }\right)$
$r_{ 5 }$ $=$ $ 13 + 6\cdot 23 + 6\cdot 23^{2} + 5\cdot 23^{3} + 17\cdot 23^{4} + 11\cdot 23^{5} + 4\cdot 23^{6} +O\left(23^{ 7 }\right)$
$r_{ 6 }$ $=$ $ 14 + 18\cdot 23 + 8\cdot 23^{2} + 21\cdot 23^{3} + 9\cdot 23^{4} + 11\cdot 23^{5} +O\left(23^{ 7 }\right)$
$r_{ 7 }$ $=$ $ 18 + 22\cdot 23 + 23^{2} + 22\cdot 23^{3} + 14\cdot 23^{4} + 4\cdot 23^{5} + 21\cdot 23^{6} +O\left(23^{ 7 }\right)$
$r_{ 8 }$ $=$ $ 22 + 10\cdot 23 + 8\cdot 23^{2} + 11\cdot 23^{3} + 4\cdot 23^{4} + 6\cdot 23^{5} + 11\cdot 23^{6} +O\left(23^{ 7 }\right)$

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

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

Character values on conjugacy classes

SizeOrderAction on $r_1, \ldots, r_{ 8 }$ Character values
$c1$
$1$ $1$ $()$ $2$
$1$ $2$ $(1,8)(2,7)(3,6)(4,5)$ $-2$
$2$ $2$ $(1,2)(3,5)(4,6)(7,8)$ $0$
$2$ $2$ $(1,4)(2,3)(5,8)(6,7)$ $0$
$2$ $4$ $(1,3,8,6)(2,4,7,5)$ $0$
The blue line marks the conjugacy class containing complex conjugation.