Properties

Label 4.2e8_5e5.5t5.2
Dimension 4
Group $\PGL(2,5)$
Conductor $ 2^{8} \cdot 5^{5}$
Frobenius-Schur indicator 1

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Basic invariants

Dimension:$4$
Group:$\PGL(2,5)$
Conductor:$800000= 2^{8} \cdot 5^{5} $
Artin number field: Splitting field of $f= x^{6} - 2 x^{5} + 4 x + 2 $ over $\Q$
Size of Galois orbit: 1
Smallest containing permutation representation: $S_5$
Parity: Even

Galois action

Roots of defining polynomial

The roots of $f$ are computed in an extension of $\Q_{ 31 }$ to precision 5.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 31 }$: $ x^{2} + 29 x + 3 $
Roots:
$r_{ 1 }$ $=$ $ 21 a + 17 + \left(24 a + 8\right)\cdot 31 + \left(11 a + 28\right)\cdot 31^{2} + \left(8 a + 6\right)\cdot 31^{3} + \left(a + 21\right)\cdot 31^{4} +O\left(31^{ 5 }\right)$
$r_{ 2 }$ $=$ $ 3 a + 19 + \left(29 a + 4\right)\cdot 31 + \left(28 a + 19\right)\cdot 31^{2} + \left(8 a + 10\right)\cdot 31^{3} + \left(20 a + 21\right)\cdot 31^{4} +O\left(31^{ 5 }\right)$
$r_{ 3 }$ $=$ $ 25 + 8\cdot 31 + 19\cdot 31^{2} + 22\cdot 31^{3} + 4\cdot 31^{4} +O\left(31^{ 5 }\right)$
$r_{ 4 }$ $=$ $ 28 a + 25 + \left(a + 28\right)\cdot 31 + \left(2 a + 16\right)\cdot 31^{2} + \left(22 a + 30\right)\cdot 31^{3} + \left(10 a + 21\right)\cdot 31^{4} +O\left(31^{ 5 }\right)$
$r_{ 5 }$ $=$ $ 12 + 5\cdot 31 + 13\cdot 31^{2} + 10\cdot 31^{3} + 8\cdot 31^{4} +O\left(31^{ 5 }\right)$
$r_{ 6 }$ $=$ $ 10 a + 28 + \left(6 a + 5\right)\cdot 31 + \left(19 a + 27\right)\cdot 31^{2} + \left(22 a + 11\right)\cdot 31^{3} + \left(29 a + 15\right)\cdot 31^{4} +O\left(31^{ 5 }\right)$

Generators of the action on the roots $r_1, \ldots, r_{ 6 }$

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

Character values on conjugacy classes

SizeOrderAction on $r_1, \ldots, r_{ 6 }$ Character values
$c1$
$1$ $1$ $()$ $4$
$10$ $2$ $(1,6)(2,5)(3,4)$ $2$
$15$ $2$ $(1,6)(3,5)$ $0$
$20$ $3$ $(1,3,4)(2,6,5)$ $1$
$30$ $4$ $(1,5,6,3)$ $0$
$24$ $5$ $(2,3,5,4,6)$ $-1$
$20$ $6$ $(1,6,3,5,4,2)$ $-1$
The blue line marks the conjugacy class containing complex conjugation.