Properties

Label 2.2855.10t3.a.a
Dimension $2$
Group $D_{10}$
Conductor $2855$
Root number $1$
Indicator $1$

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Basic invariants

Dimension: $2$
Group: $D_{10}$
Conductor: \(2855\)\(\medspace = 5 \cdot 571 \)
Frobenius-Schur indicator: $1$
Root number: $1$
Artin stem field: Galois closure of 10.0.37936788082406875.1
Galois orbit size: $2$
Smallest permutation container: $D_{10}$
Parity: odd
Determinant: 1.2855.2t1.a.a
Projective image: $D_5$
Projective stem field: Galois closure of 5.1.8151025.1

Defining polynomial

$f(x)$$=$ \( x^{10} - 4 x^{9} - 19 x^{8} + 160 x^{7} - 141 x^{6} - 1968 x^{5} + 9190 x^{4} - 19678 x^{3} + \cdots + 4255 \) Copy content Toggle raw display .

The roots of $f$ are computed in an extension of $\Q_{ 11 }$ to precision 10.

Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 11 }$: \( x^{5} + 10x^{2} + 9 \) Copy content Toggle raw display

Roots:
$r_{ 1 }$ $=$ \( 5 a^{4} + 6 a^{3} + a^{2} + 10 a + 10 + \left(5 a^{4} + 10 a^{3} + 4 a^{2} + 9 a + 3\right)\cdot 11 + \left(7 a^{4} + 7 a^{3} + 7 a^{2} + 9 a + 10\right)\cdot 11^{2} + \left(7 a^{4} + 9 a^{2} + 2 a + 10\right)\cdot 11^{3} + \left(8 a^{4} + 7 a^{3} + 7 a^{2} + 5 a + 4\right)\cdot 11^{4} + \left(6 a^{4} + a^{3} + 3 a^{2} + 7 a + 5\right)\cdot 11^{5} + \left(7 a^{4} + 10 a^{3} + 10 a^{2} + 4 a + 1\right)\cdot 11^{6} + \left(4 a^{4} + a^{3} + 8 a^{2} + 7\right)\cdot 11^{7} + \left(5 a^{3} + 4 a + 4\right)\cdot 11^{8} + \left(5 a^{4} + a^{3} + 7 a^{2} + 7 a + 4\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 2 }$ $=$ \( 8 a^{4} + a^{3} + 7 a^{2} + 2 + \left(2 a^{4} + a^{3} + 10 a + 2\right)\cdot 11 + \left(4 a^{4} + 9 a^{3} + 6 a^{2} + 7 a + 6\right)\cdot 11^{2} + \left(8 a^{4} + 10 a^{3} + 6 a^{2} + 4 a + 5\right)\cdot 11^{3} + \left(10 a^{4} + 4 a^{3} + 5 a^{2} + 2 a + 3\right)\cdot 11^{4} + \left(9 a^{3} + 6 a^{2} + 8 a + 8\right)\cdot 11^{5} + \left(9 a^{4} + 10 a^{3} + 10 a^{2} + 3 a + 5\right)\cdot 11^{6} + \left(2 a^{4} + 2 a^{2} + 9 a + 1\right)\cdot 11^{7} + \left(6 a^{4} + 8 a^{3} + 10 a^{2} + 6 a\right)\cdot 11^{8} + \left(3 a^{4} + 8 a^{3} + 9 a^{2} + 8 a + 4\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 3 }$ $=$ \( 10 a^{4} + 2 a^{3} + 3 a^{2} + 6 a + 8 + \left(3 a^{4} + 6 a^{3} + 7 a^{2} + 6 a + 10\right)\cdot 11 + \left(4 a^{4} + 9 a^{3} + 9 a^{2} + 4 a + 8\right)\cdot 11^{2} + \left(5 a^{4} + 5 a^{2} + 2 a\right)\cdot 11^{3} + \left(5 a^{4} + a^{3} + 9 a^{2} + 8 a + 2\right)\cdot 11^{4} + \left(7 a^{4} + 8 a^{3} + 10 a^{2} + 8 a\right)\cdot 11^{5} + \left(a^{4} + 3 a^{3} + 2 a^{2} + a + 7\right)\cdot 11^{6} + \left(a^{4} + 5 a^{3} + 5 a^{2} + 5\right)\cdot 11^{7} + \left(9 a^{4} + 9 a^{3} + 2 a^{2} + 6 a + 8\right)\cdot 11^{8} + \left(2 a^{4} + a^{3} + 7 a^{2} + 3 a + 6\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 4 }$ $=$ \( 5 a^{4} + 3 a^{3} + 8 a + 3 + \left(7 a^{4} + a^{3} + 5 a^{2} + 10 a + 3\right)\cdot 11 + \left(7 a^{4} + 6 a^{3} + 4 a^{2} + 2 a + 10\right)\cdot 11^{2} + \left(3 a^{4} + 2 a^{2} + 3 a + 9\right)\cdot 11^{3} + \left(9 a^{4} + 3 a^{3} + 9 a^{2} + 5 a + 2\right)\cdot 11^{4} + \left(2 a^{4} + 2 a^{3} + 8 a^{2} + 6 a + 9\right)\cdot 11^{5} + \left(10 a^{4} + 9 a^{2} + 6 a + 7\right)\cdot 11^{6} + \left(2 a^{4} + 10 a^{3} + 6 a^{2} + 2 a\right)\cdot 11^{7} + \left(7 a^{4} + 2 a^{3} + 9 a^{2} + 8 a + 2\right)\cdot 11^{8} + \left(2 a^{4} + 4 a^{3} + 5 a^{2} + 3 a + 10\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 5 }$ $=$ \( 6 a^{4} + 3 a^{3} + 3 a^{2} + 8 a + 3 + \left(9 a^{4} + 7 a^{3} + 3 a^{2} + 9 a + 6\right)\cdot 11 + \left(5 a^{4} + 2 a^{3} + 8 a^{2} + 4 a\right)\cdot 11^{2} + \left(4 a^{4} + 10 a^{3} + 3 a^{2} + 6 a + 2\right)\cdot 11^{3} + \left(5 a^{4} + 10 a^{3} + 5 a^{2} + 10 a + 6\right)\cdot 11^{4} + \left(6 a^{4} + 10 a^{3} + 10 a^{2} + 6 a + 6\right)\cdot 11^{5} + \left(7 a^{4} + a^{2} + 8 a + 1\right)\cdot 11^{6} + \left(10 a^{4} + 6 a^{3} + 9 a^{2} + 10 a + 10\right)\cdot 11^{7} + \left(5 a^{4} + 10 a^{3} + 4 a^{2} + 8 a + 3\right)\cdot 11^{8} + \left(4 a^{4} + 8 a^{3} + a^{2} + 5 a + 5\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 6 }$ $=$ \( a^{4} + 5 a^{3} + a^{2} + 9 a + 4 + \left(6 a^{4} + a^{2} + 3 a + 9\right)\cdot 11 + \left(10 a^{4} + 2 a^{3} + 2 a^{2} + 2 a + 7\right)\cdot 11^{2} + \left(8 a^{4} + 7 a^{2} + 7\right)\cdot 11^{3} + \left(8 a^{4} + 6 a^{3} + 5 a + 9\right)\cdot 11^{4} + \left(10 a^{4} + 8 a^{3} + 5 a^{2} + a + 2\right)\cdot 11^{5} + \left(6 a^{4} + 8 a^{3} + 7 a^{2} + 3 a + 4\right)\cdot 11^{6} + \left(a^{4} + 6 a^{3} + 9 a^{2} + 4 a + 3\right)\cdot 11^{7} + \left(5 a^{4} + 6 a^{3} + 4 a^{2} + a + 2\right)\cdot 11^{8} + \left(8 a^{3} + a^{2} + 9 a + 3\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 7 }$ $=$ \( 5 a^{4} + 2 a^{3} + 9 a^{2} + 5 a + 8 + \left(4 a^{4} + 3 a^{3} + 10 a^{2} + 7 a + 3\right)\cdot 11 + \left(4 a^{4} + 6 a^{3} + a^{2} + 5 a\right)\cdot 11^{2} + \left(6 a^{4} + 3 a^{3} + 7 a^{2} + 4 a + 6\right)\cdot 11^{3} + \left(a^{4} + 3 a^{3} + 6 a^{2} + 4\right)\cdot 11^{4} + \left(5 a^{4} + 6 a^{3} + 7 a^{2} + 5 a\right)\cdot 11^{5} + \left(8 a^{4} + a^{3} + 7 a^{2} + 8 a + 5\right)\cdot 11^{6} + \left(a^{4} + 5 a^{3} + 4 a^{2} + 9 a + 4\right)\cdot 11^{7} + \left(8 a^{4} + 6 a^{3} + 7 a + 1\right)\cdot 11^{8} + \left(9 a^{4} + 2 a^{3} + 6 a^{2} + a\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 8 }$ $=$ \( 5 a^{4} + 3 a^{3} + 3 a^{2} + 3 a + 3 + \left(3 a^{4} + 10 a^{3} + 9 a^{2} + 9 a + 2\right)\cdot 11 + \left(a^{4} + a^{3} + 10 a^{2} + 7\right)\cdot 11^{2} + \left(9 a^{4} + 6 a^{3} + 10 a^{2} + 7 a + 10\right)\cdot 11^{3} + \left(5 a^{4} + 9 a^{3} + a^{2} + 5 a + 8\right)\cdot 11^{4} + \left(5 a^{4} + 6 a^{3} + 10 a^{2} + 4 a + 3\right)\cdot 11^{5} + \left(3 a^{4} + 5 a^{3} + a^{2} + a + 7\right)\cdot 11^{6} + \left(2 a^{4} + 2 a^{2} + 9\right)\cdot 11^{7} + \left(2 a^{4} + 6 a^{3} + 10 a^{2} + 4 a + 9\right)\cdot 11^{8} + \left(3 a^{4} + 4 a^{3} + 3 a^{2} + 4 a\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 9 }$ $=$ \( 9 a^{4} + 4 a^{3} + 4 a^{2} + 9 + \left(6 a^{4} + 6 a^{3} + 9 a^{2} + 7 a\right)\cdot 11 + \left(6 a^{4} + 4 a^{3} + 9 a^{2} + 8 a + 1\right)\cdot 11^{2} + \left(10 a^{4} + a^{3} + 5 a^{2} + 6 a + 4\right)\cdot 11^{3} + \left(8 a^{4} + 2 a^{3} + 4 a^{2} + a + 8\right)\cdot 11^{4} + \left(4 a^{4} + 9 a^{3} + 2 a^{2} + 4 a + 6\right)\cdot 11^{5} + \left(3 a^{4} + 5 a^{3} + 9 a^{2} + 4 a + 8\right)\cdot 11^{6} + \left(7 a^{4} + 6 a^{3} + 8 a^{2} + 7 a + 1\right)\cdot 11^{7} + \left(8 a^{4} + 9 a^{3} + 3 a^{2} + 2 a + 9\right)\cdot 11^{8} + \left(3 a^{4} + a^{3} + 9 a^{2} + 6 a + 6\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display
$r_{ 10 }$ $=$ \( a^{4} + 4 a^{3} + 2 a^{2} + 6 a + 9 + \left(5 a^{4} + 8 a^{3} + 4 a^{2} + 2 a + 1\right)\cdot 11 + \left(2 a^{4} + 4 a^{3} + 5 a^{2} + 7 a + 2\right)\cdot 11^{2} + \left(a^{4} + 9 a^{3} + 6 a^{2} + 5 a + 8\right)\cdot 11^{3} + \left(a^{4} + 6 a^{3} + 3 a^{2} + 10 a + 3\right)\cdot 11^{4} + \left(4 a^{4} + 2 a^{3} + a\right)\cdot 11^{5} + \left(7 a^{4} + 7 a^{3} + 4 a^{2} + a + 6\right)\cdot 11^{6} + \left(8 a^{4} + 7 a^{2} + 10 a + 10\right)\cdot 11^{7} + \left(a^{4} + a^{3} + 7 a^{2} + 4 a + 1\right)\cdot 11^{8} + \left(8 a^{4} + a^{3} + 2 a^{2} + 4 a + 2\right)\cdot 11^{9} +O(11^{10})\) Copy content Toggle raw display

Generators of the action on the roots $r_1, \ldots, r_{ 10 }$

Cycle notation
$(3,8)(4,7)(5,10)(6,9)$
$(1,2)(3,9)(4,10)(5,7)(6,8)$
$(1,5)(2,7)(4,8)(6,10)$

Character values on conjugacy classes

SizeOrderAction on $r_1, \ldots, r_{ 10 }$ Character value
$1$$1$$()$$2$
$1$$2$$(1,2)(3,9)(4,10)(5,7)(6,8)$$-2$
$5$$2$$(1,5)(2,7)(4,8)(6,10)$$0$
$5$$2$$(1,7)(2,5)(3,9)(4,6)(8,10)$$0$
$2$$5$$(1,10,9,6,5)(2,4,3,8,7)$$-\zeta_{5}^{3} - \zeta_{5}^{2} - 1$
$2$$5$$(1,9,5,10,6)(2,3,7,4,8)$$\zeta_{5}^{3} + \zeta_{5}^{2}$
$2$$10$$(1,4,9,8,5,2,10,3,6,7)$$\zeta_{5}^{3} + \zeta_{5}^{2} + 1$
$2$$10$$(1,8,10,7,9,2,6,4,5,3)$$-\zeta_{5}^{3} - \zeta_{5}^{2}$

The blue line marks the conjugacy class containing complex conjugation.