Properties

Label 4.2e4_433.8t39.2
Dimension 4
Group $C_2^3:S_4$
Conductor $ 2^{4} \cdot 433 $
Frobenius-Schur indicator 1

Related objects

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Basic invariants

Dimension:$4$
Group:$C_2^3:S_4$
Conductor:$6928= 2^{4} \cdot 433 $
Artin number field: Splitting field of $f= x^{8} - x^{7} + x^{6} + x^{5} - 2 x^{4} + x^{3} + x^{2} - x + 1 $ over $\Q$
Size of Galois orbit: 1
Smallest containing permutation representation: $C_2^3:S_4$
Parity: Odd

Galois action

Roots of defining polynomial

The roots of $f$ are computed in an extension of $\Q_{ 47 }$ to precision 13.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 47 }$: $ x^{3} + 3 x + 42 $
Roots:
$r_{ 1 }$ $=$ $ 18 a^{2} + 18 a + 5 + \left(7 a^{2} + 45 a + 43\right)\cdot 47 + \left(14 a^{2} + 21 a + 9\right)\cdot 47^{2} + \left(27 a^{2} + 8 a + 20\right)\cdot 47^{3} + \left(35 a^{2} + 45 a + 26\right)\cdot 47^{4} + \left(26 a^{2} + 11 a + 31\right)\cdot 47^{5} + \left(31 a^{2} + 12 a + 22\right)\cdot 47^{6} + \left(34 a^{2} + 32 a + 26\right)\cdot 47^{7} + \left(43 a^{2} + 19 a + 30\right)\cdot 47^{8} + \left(29 a^{2} + 2 a + 45\right)\cdot 47^{9} + \left(25 a^{2} + 44 a + 10\right)\cdot 47^{10} + \left(35 a^{2} + 27 a\right)\cdot 47^{11} + \left(15 a^{2} + 7 a + 29\right)\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 2 }$ $=$ $ 41 + 17\cdot 47 + 7\cdot 47^{2} + 13\cdot 47^{3} + 25\cdot 47^{4} + 24\cdot 47^{5} + 43\cdot 47^{6} + 19\cdot 47^{7} + 3\cdot 47^{8} + 5\cdot 47^{9} + 36\cdot 47^{10} + 18\cdot 47^{11} + 31\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 3 }$ $=$ $ 36 a^{2} + 27 a + 41 + \left(7 a^{2} + 26 a + 43\right)\cdot 47 + \left(11 a^{2} + 21 a + 3\right)\cdot 47^{2} + \left(4 a^{2} + 11 a + 21\right)\cdot 47^{3} + \left(27 a^{2} + 13 a + 9\right)\cdot 47^{4} + \left(40 a^{2} + 8 a + 12\right)\cdot 47^{5} + \left(2 a^{2} + 23 a + 12\right)\cdot 47^{6} + \left(21 a^{2} + 7 a + 46\right)\cdot 47^{7} + \left(37 a^{2} + 3 a + 17\right)\cdot 47^{8} + \left(46 a^{2} + a + 32\right)\cdot 47^{9} + \left(11 a^{2} + 34 a + 30\right)\cdot 47^{10} + \left(32 a^{2} + 9 a + 40\right)\cdot 47^{11} + \left(13 a^{2} + 16 a + 24\right)\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 4 }$ $=$ $ 40 a^{2} + 2 a + 2 + \left(31 a^{2} + 22 a + 45\right)\cdot 47 + \left(21 a^{2} + 3 a + 24\right)\cdot 47^{2} + \left(15 a^{2} + 27 a + 43\right)\cdot 47^{3} + \left(31 a^{2} + 35 a + 17\right)\cdot 47^{4} + \left(26 a^{2} + 26 a + 31\right)\cdot 47^{5} + \left(12 a^{2} + 11 a + 31\right)\cdot 47^{6} + \left(38 a^{2} + 7 a + 33\right)\cdot 47^{7} + \left(12 a^{2} + 24 a + 15\right)\cdot 47^{8} + \left(17 a^{2} + 43 a + 20\right)\cdot 47^{9} + \left(9 a^{2} + 15 a + 25\right)\cdot 47^{10} + \left(26 a^{2} + 9 a + 28\right)\cdot 47^{11} + \left(17 a^{2} + 23 a + 32\right)\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 5 }$ $=$ $ 29 a^{2} + 19 a + \left(25 a^{2} + 16 a + 38\right)\cdot 47 + \left(17 a^{2} + 11 a + 46\right)\cdot 47^{2} + \left(3 a^{2} + 7 a + 43\right)\cdot 47^{3} + \left(10 a^{2} + 22\right)\cdot 47^{4} + \left(17 a^{2} + 25 a + 24\right)\cdot 47^{5} + \left(38 a^{2} + 3 a + 2\right)\cdot 47^{6} + \left(15 a^{2} + 43 a + 12\right)\cdot 47^{7} + \left(42 a^{2} + 9 a + 45\right)\cdot 47^{8} + \left(33 a^{2} + 18 a + 9\right)\cdot 47^{9} + \left(11 a^{2} + 38 a + 28\right)\cdot 47^{10} + \left(36 a^{2} + 3 a + 16\right)\cdot 47^{11} + \left(17 a^{2} + 33 a + 41\right)\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 6 }$ $=$ $ 6 a^{2} + 24 a + 1 + \left(31 a^{2} + 4 a + 2\right)\cdot 47 + \left(25 a^{2} + 10 a + 16\right)\cdot 47^{2} + \left(20 a^{2} + 43 a + 31\right)\cdot 47^{3} + \left(27 a^{2} + 42 a + 10\right)\cdot 47^{4} + \left(36 a^{2} + 40 a + 16\right)\cdot 47^{5} + \left(8 a^{2} + 2 a + 37\right)\cdot 47^{6} + \left(34 a^{2} + 42 a + 1\right)\cdot 47^{7} + \left(20 a^{2} + 30 a + 2\right)\cdot 47^{8} + \left(18 a^{2} + 26 a + 26\right)\cdot 47^{9} + \left(24 a^{2} + 21 a + 6\right)\cdot 47^{10} + \left(37 a^{2} + 25 a + 19\right)\cdot 47^{11} + \left(29 a^{2} + 14 a + 18\right)\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 7 }$ $=$ $ 39 + 30\cdot 47 + 12\cdot 47^{2} + 25\cdot 47^{3} + 6\cdot 47^{4} + 24\cdot 47^{5} + 18\cdot 47^{6} + 26\cdot 47^{7} + 3\cdot 47^{8} + 23\cdot 47^{9} + 23\cdot 47^{10} + 32\cdot 47^{11} + 5\cdot 47^{12} +O\left(47^{ 13 }\right)$
$r_{ 8 }$ $=$ $ 12 a^{2} + 4 a + 13 + \left(37 a^{2} + 26 a + 14\right)\cdot 47 + \left(3 a^{2} + 25 a + 19\right)\cdot 47^{2} + \left(23 a^{2} + 43 a + 36\right)\cdot 47^{3} + \left(9 a^{2} + 3 a + 21\right)\cdot 47^{4} + \left(40 a^{2} + 28 a + 23\right)\cdot 47^{5} + \left(46 a^{2} + 40 a + 19\right)\cdot 47^{6} + \left(43 a^{2} + 8 a + 21\right)\cdot 47^{7} + \left(30 a^{2} + 6 a + 22\right)\cdot 47^{8} + \left(41 a^{2} + 2 a + 25\right)\cdot 47^{9} + \left(10 a^{2} + 34 a + 26\right)\cdot 47^{10} + \left(20 a^{2} + 17 a + 31\right)\cdot 47^{11} + \left(46 a^{2} + 46 a + 4\right)\cdot 47^{12} +O\left(47^{ 13 }\right)$

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

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

Character values on conjugacy classes

SizeOrderAction on $r_1, \ldots, r_{ 8 }$ Character values
$c1$
$1$ $1$ $()$ $4$
$1$ $2$ $(1,8)(2,7)(3,6)(4,5)$ $-4$
$6$ $2$ $(1,3)(2,4)(5,7)(6,8)$ $0$
$6$ $2$ $(1,3)(2,5)(4,7)(6,8)$ $0$
$6$ $2$ $(1,8)(4,5)$ $0$
$12$ $2$ $(3,5)(4,6)$ $2$
$12$ $2$ $(1,8)(2,6)(3,7)(4,5)$ $-2$
$32$ $3$ $(1,3,7)(2,8,6)$ $1$
$12$ $4$ $(1,6,8,3)(2,5,7,4)$ $0$
$24$ $4$ $(1,2,3,4)(5,8,7,6)$ $0$
$24$ $4$ $(1,5,3,2)(4,6,7,8)$ $0$
$24$ $4$ $(1,8)(3,4,6,5)$ $0$
$32$ $6$ $(1,2,3,8,7,6)(4,5)$ $-1$
The blue line marks the conjugacy class containing complex conjugation.