Basic invariants
Dimension: | $2$ |
Group: | $D_5\times C_3$ |
Conductor: | \(3971\)\(\medspace = 11 \cdot 19^{2} \) |
Artin stem field: | Galois closure of 15.3.1415489083272211976282881.1 |
Galois orbit size: | $4$ |
Smallest permutation container: | $D_5\times C_3$ |
Parity: | odd |
Determinant: | 1.209.6t1.b.b |
Projective image: | $D_5$ |
Projective stem field: | Galois closure of 5.1.15768841.1 |
Defining polynomial
$f(x)$ | $=$ | \( x^{15} - 3 x^{14} + 27 x^{13} - 69 x^{12} + 220 x^{11} - 435 x^{10} + 430 x^{9} - 192 x^{8} + \cdots - 1303 \) . |
The roots of $f$ are computed in an extension of $\Q_{ 31 }$ to precision 10.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 31 }$: \( x^{5} + 7x + 28 \)
Roots:
$r_{ 1 }$ | $=$ | \( a^{3} + 23 a^{2} + 6 a + 8 + \left(29 a^{4} + 7 a^{3} + 9 a^{2} + 10 a + 15\right)\cdot 31 + \left(30 a^{4} + 26 a^{3} + 20 a^{2} + 21 a + 24\right)\cdot 31^{2} + \left(15 a^{4} + 16 a^{3} + 4 a^{2} + 28 a + 14\right)\cdot 31^{3} + \left(7 a^{4} + 14 a^{3} + 30 a^{2} + 20 a + 7\right)\cdot 31^{4} + \left(3 a^{4} + 18 a^{3} + 29 a^{2} + 21 a + 20\right)\cdot 31^{5} + \left(26 a^{4} + 29 a^{3} + 26 a^{2} + 13 a + 25\right)\cdot 31^{6} + \left(28 a^{4} + 24 a^{3} + 14 a^{2} + 12 a + 5\right)\cdot 31^{7} + \left(8 a^{4} + 27 a^{3} + 10 a^{2} + 29 a + 10\right)\cdot 31^{8} + \left(a^{4} + 29 a^{3} + 16 a^{2} + 6 a + 24\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 2 }$ | $=$ | \( 5 a^{4} + 5 a^{3} + 19 a^{2} + 20 a + 5 + \left(10 a^{4} + 6 a^{3} + 7 a^{2} + 23 a + 15\right)\cdot 31 + \left(8 a^{4} + 3 a^{3} + 29 a^{2} + 27 a + 9\right)\cdot 31^{2} + \left(11 a^{4} + 2 a^{3} + 29 a^{2} + 2 a + 19\right)\cdot 31^{3} + \left(6 a^{3} + 6 a + 4\right)\cdot 31^{4} + \left(9 a^{4} + 15 a^{3} + 20 a^{2} + 9\right)\cdot 31^{5} + \left(27 a^{4} + 14 a^{3} + 29 a^{2} + 4 a + 1\right)\cdot 31^{6} + \left(13 a^{4} + a^{3} + 29 a^{2} + 21 a + 15\right)\cdot 31^{7} + \left(21 a^{4} + 2 a^{3} + 3 a^{2} + 10 a + 24\right)\cdot 31^{8} + \left(23 a^{4} + 19 a^{3} + 20 a^{2} + a + 25\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 3 }$ | $=$ | \( 5 a^{4} + 23 a^{3} + 19 a^{2} + 4 a + 5 + \left(8 a^{4} + 23 a^{3} + 20 a^{2} + 7 a + 10\right)\cdot 31 + \left(24 a^{4} + 7 a^{3} + 14 a^{2} + 14 a + 24\right)\cdot 31^{2} + \left(30 a^{4} + 24 a^{3} + 3 a^{2} + 6 a + 10\right)\cdot 31^{3} + \left(4 a^{3} + 26 a^{2} + 28 a + 14\right)\cdot 31^{4} + \left(15 a^{4} + 18 a^{3} + 25 a^{2} + 23 a + 30\right)\cdot 31^{5} + \left(19 a^{4} + 6 a^{3} + 10 a^{2} + 25 a\right)\cdot 31^{6} + \left(a^{4} + 18 a^{2} + 24 a + 27\right)\cdot 31^{7} + \left(8 a^{4} + 14 a^{3} + 19 a^{2} + 23\right)\cdot 31^{8} + \left(22 a^{4} + 18 a^{3} + 5 a^{2} + 10 a + 17\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 4 }$ | $=$ | \( 6 a^{4} + 15 a^{3} + 23 a^{2} + 18 a + 19 + \left(15 a^{4} + 4 a^{3} + 24 a^{2} + 15 a + 24\right)\cdot 31 + \left(3 a^{4} + 6 a^{3} + 16 a^{2} + 11 a + 20\right)\cdot 31^{2} + \left(22 a^{4} + 14 a^{3} + 18 a^{2} + 19 a + 30\right)\cdot 31^{3} + \left(17 a^{4} + 10 a^{2} + 14 a + 26\right)\cdot 31^{4} + \left(6 a^{4} + 13 a^{3} + 12 a^{2} + a + 29\right)\cdot 31^{5} + \left(4 a^{4} + 25 a^{3} + 20 a^{2} + 8 a + 29\right)\cdot 31^{6} + \left(19 a^{4} + 25 a^{3} + 14 a^{2} + 24 a + 10\right)\cdot 31^{7} + \left(30 a^{4} + 22 a^{3} + 20 a^{2} + 4 a + 16\right)\cdot 31^{8} + \left(30 a^{4} + 30 a^{3} + 6 a^{2} + 4 a + 7\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 5 }$ | $=$ | \( 6 a^{4} + 25 a^{3} + 30 a^{2} + 13 a + 23 + \left(19 a^{4} + 16 a^{3} + 16 a^{2} + 22 a + 3\right)\cdot 31 + \left(21 a^{4} + 8 a^{3} + 3 a^{2} + 25 a + 28\right)\cdot 31^{2} + \left(12 a^{4} + 11 a^{3} + 27 a^{2} + 23 a + 14\right)\cdot 31^{3} + \left(8 a^{4} + 14 a^{3} + 15 a^{2} + 19 a + 12\right)\cdot 31^{4} + \left(15 a^{4} + 27 a^{3} + 13 a^{2} + 8 a + 19\right)\cdot 31^{5} + \left(12 a^{4} + 30 a^{3} + 18 a^{2} + 26 a + 17\right)\cdot 31^{6} + \left(7 a^{4} + 17 a^{3} + 13 a^{2} + 2 a + 3\right)\cdot 31^{7} + \left(3 a^{4} + 21 a^{3} + 8 a^{2} + 20 a + 3\right)\cdot 31^{8} + \left(26 a^{4} + 26 a^{3} + 2 a^{2} + 10 a + 2\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 6 }$ | $=$ | \( 6 a^{4} + 29 a^{3} + 15 a^{2} + 5 a + 19 + \left(24 a^{4} + 5 a^{3} + 13 a^{2} + 20 a\right)\cdot 31 + \left(18 a^{4} + 9 a^{3} + 29 a^{2} + 24 a + 1\right)\cdot 31^{2} + \left(7 a^{4} + 11 a^{3} + 15 a^{2} + 30\right)\cdot 31^{3} + \left(29 a^{4} + 12 a^{3} + 17 a + 10\right)\cdot 31^{4} + \left(18 a^{4} + 22 a^{2} + 17 a + 12\right)\cdot 31^{5} + \left(12 a^{4} + 14 a^{3} + 17 a^{2} + 19 a + 27\right)\cdot 31^{6} + \left(26 a^{4} + 20 a^{3} + 24 a^{2} + 13 a + 26\right)\cdot 31^{7} + \left(25 a^{4} + 28 a^{3} + 6 a^{2} + 19 a + 26\right)\cdot 31^{8} + \left(30 a^{4} + a^{3} + 25 a^{2} + 12 a + 12\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 7 }$ | $=$ | \( 10 a^{4} + 17 a^{3} + 12 a^{2} + 3 a + 26 + \left(18 a^{4} + 23 a^{3} + 17 a^{2} + 4 a + 18\right)\cdot 31 + \left(19 a^{4} + 30 a^{3} + 6 a^{2} + 20 a + 21\right)\cdot 31^{2} + \left(5 a^{4} + 4 a^{3} + 3 a^{2} + 27 a + 19\right)\cdot 31^{3} + \left(24 a^{4} + 20 a^{3} + 15 a^{2} + 4 a + 6\right)\cdot 31^{4} + \left(5 a^{4} + 28 a^{3} + 29 a^{2} + 25 a + 6\right)\cdot 31^{5} + \left(7 a^{4} + 15 a^{3} + 23 a^{2} + 9 a + 24\right)\cdot 31^{6} + \left(14 a^{3} + 20 a^{2} + 4 a + 23\right)\cdot 31^{7} + \left(18 a^{4} + 16 a^{3} + 19 a^{2} + 18 a + 16\right)\cdot 31^{8} + \left(3 a^{4} + 12 a^{3} + 22 a^{2} + 21 a + 1\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 8 }$ | $=$ | \( 13 a^{4} + 5 a^{3} + 21 a^{2} + 20 a + 21 + \left(20 a^{4} + 15 a^{3} + 28 a^{2} + 20 a + 16\right)\cdot 31 + \left(5 a^{4} + 6 a^{3} + 2 a^{2} + 13 a + 20\right)\cdot 31^{2} + \left(24 a^{4} + 20 a^{3} + 2 a^{2} + 15 a + 23\right)\cdot 31^{3} + \left(16 a^{4} + 30 a^{3} + 12 a^{2} + a + 21\right)\cdot 31^{4} + \left(17 a^{4} + 22 a^{3} + 29 a^{2} + 18 a + 10\right)\cdot 31^{5} + \left(14 a^{4} + 27 a^{3} + 15 a^{2} + 28 a + 7\right)\cdot 31^{6} + \left(25 a^{4} + 25 a^{3} + 12 a^{2} + 6 a + 9\right)\cdot 31^{7} + \left(21 a^{4} + 24 a^{3} + 11 a^{2} + 25 a + 4\right)\cdot 31^{8} + \left(a^{4} + 23 a^{3} + 2 a^{2} + 27 a + 17\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 9 }$ | $=$ | \( 15 a^{4} + 8 a^{3} + 2 a^{2} + 19 a + 30 + \left(26 a^{4} + 8 a^{3} + 7 a^{2} + 29 a + 25\right)\cdot 31 + \left(7 a^{4} + 16 a^{3} + 25 a^{2} + 3 a + 6\right)\cdot 31^{2} + \left(22 a^{4} + 7 a^{3} + 27 a^{2}\right)\cdot 31^{3} + \left(13 a^{4} + 22 a^{3} + 19 a^{2} + 18 a + 5\right)\cdot 31^{4} + \left(19 a^{4} + 13 a^{3} + 3 a^{2} + 7 a + 24\right)\cdot 31^{5} + \left(7 a^{4} + 11 a^{3} + 7 a^{2} + 23 a + 2\right)\cdot 31^{6} + \left(10 a^{4} + 17 a^{3} + 16 a^{2} + 7\right)\cdot 31^{7} + \left(20 a^{4} + 27 a^{3} + 19 a^{2} + a + 18\right)\cdot 31^{8} + \left(19 a^{4} + 29 a^{3} + 17 a^{2} + 2 a + 15\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 10 }$ | $=$ | \( 15 a^{4} + 13 a^{3} + 14 a^{2} + 3 a + 23 + \left(23 a^{4} + 7 a^{3} + 12 a^{2} + 30 a + 16\right)\cdot 31 + \left(2 a^{4} + 5 a^{3} + a^{2} + 9 a + 26\right)\cdot 31^{2} + \left(14 a^{4} + 22 a^{3} + 13 a^{2} + 11 a + 29\right)\cdot 31^{3} + \left(10 a^{4} + 27 a^{3} + 9 a^{2} + 28 a + 28\right)\cdot 31^{4} + \left(21 a^{4} + 16 a^{3} + a^{2} + 21 a + 18\right)\cdot 31^{5} + \left(16 a^{4} + 12 a^{3} + 3 a^{2} + 5 a + 21\right)\cdot 31^{6} + \left(a^{4} + 25 a^{3} + 19 a^{2} + a + 18\right)\cdot 31^{7} + \left(4 a^{4} + 17 a^{3} + 5 a^{2} + 24 a\right)\cdot 31^{8} + \left(a^{4} + 20 a^{3} + 9 a + 25\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 11 }$ | $=$ | \( 16 a^{4} + 22 a^{3} + 9 a^{2} + 7 a + 13 + \left(27 a^{4} + 10 a^{3} + 25 a^{2} + 7 a + 25\right)\cdot 31 + \left(5 a^{4} + 24 a^{3} + 13 a^{2} + 9 a + 21\right)\cdot 31^{2} + \left(29 a^{4} + 7 a^{3} + 29 a^{2} + 6 a + 20\right)\cdot 31^{3} + \left(22 a^{4} + 15 a^{3} + 13 a^{2} + 2 a + 6\right)\cdot 31^{4} + \left(3 a^{4} + 13 a^{3} + 8 a^{2} + 22 a + 20\right)\cdot 31^{5} + \left(17 a^{4} + 26 a^{3} + 4 a^{2} + 14 a + 21\right)\cdot 31^{6} + \left(25 a^{4} + 26 a^{3} + 10 a^{2} + 7 a + 9\right)\cdot 31^{7} + \left(16 a^{4} + 6 a^{3} + 6 a^{2} + 8 a + 7\right)\cdot 31^{8} + \left(6 a^{4} + 26 a^{3} + 11 a^{2} + 28 a + 13\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 12 }$ | $=$ | \( 18 a^{4} + 18 a^{3} + 14 a^{2} + 21 a + 15 + \left(12 a^{4} + 5 a^{3} + 26 a^{2} + 6 a + 11\right)\cdot 31 + \left(5 a^{4} + 18 a^{3} + 28 a^{2} + 30 a + 10\right)\cdot 31^{2} + \left(4 a^{4} + 5 a^{3} + 4 a^{2} + 14 a + 5\right)\cdot 31^{3} + \left(4 a^{4} + a^{3} + 19 a^{2} + 21 a + 12\right)\cdot 31^{4} + \left(15 a^{4} + 18 a^{3} + 25 a^{2} + 29 a + 21\right)\cdot 31^{5} + \left(25 a^{3} + 29 a^{2} + a + 17\right)\cdot 31^{6} + \left(16 a^{4} + 30 a^{3} + 11 a^{2} + 21 a\right)\cdot 31^{7} + \left(23 a^{4} + 30 a^{2} + 23 a + 29\right)\cdot 31^{8} + \left(12 a^{4} + 13 a^{3} + 4 a^{2} + 26 a + 21\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 13 }$ | $=$ | \( 21 a^{4} + 22 a^{3} + 25 a^{2} + 12 a + 10 + \left(5 a^{4} + 25 a^{3} + 29 a + 2\right)\cdot 31 + \left(28 a^{4} + 15 a^{3} + 30 a^{2} + 2 a + 4\right)\cdot 31^{2} + \left(9 a^{4} + 8 a^{3} + 26 a^{2} + 20 a + 18\right)\cdot 31^{3} + \left(6 a^{4} + 3 a^{3} + 24 a^{2} + 26 a + 6\right)\cdot 31^{4} + \left(15 a^{4} + 12 a^{3} + 20 a^{2} + 2 a + 16\right)\cdot 31^{5} + \left(13 a^{4} + 30 a^{3} + 3 a^{2} + 22 a + 7\right)\cdot 31^{6} + \left(27 a^{4} + 24 a^{3} + 9 a + 20\right)\cdot 31^{7} + \left(28 a^{4} + 9 a^{3} + 17 a^{2} + 4 a + 6\right)\cdot 31^{8} + \left(22 a^{4} + 10 a^{3} + 16 a^{2} + 20 a + 18\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 14 }$ | $=$ | \( 22 a^{4} + 30 a^{3} + 29 a^{2} + 12 a + 25 + \left(8 a^{4} + a^{3} + 22 a^{2} + 15 a + 20\right)\cdot 31 + \left(6 a^{4} + 28 a^{3} + 24 a^{2} + 28 a + 27\right)\cdot 31^{2} + \left(5 a^{4} + 10 a^{3} + 20 a^{2} + 2 a + 4\right)\cdot 31^{3} + \left(23 a^{4} + 17 a^{3} + 7 a^{2} + 23 a + 7\right)\cdot 31^{4} + \left(19 a^{4} + 20 a^{3} + 11 a^{2} + 24 a + 16\right)\cdot 31^{5} + \left(21 a^{4} + 12 a^{3} + 7 a^{2} + 22 a + 24\right)\cdot 31^{6} + \left(26 a^{4} + 7 a^{3} + 14 a^{2} + 29 a + 10\right)\cdot 31^{7} + \left(17 a^{4} + 23 a^{3} + 10 a^{2} + a + 28\right)\cdot 31^{8} + \left(27 a^{4} + 25 a^{3} + 20 a^{2} + 12 a + 11\right)\cdot 31^{9} +O(31^{10})\) |
$r_{ 15 }$ | $=$ | \( 28 a^{4} + 15 a^{3} + 24 a^{2} + 23 a + 9 + \left(29 a^{4} + 23 a^{3} + 13 a^{2} + 5 a + 9\right)\cdot 31 + \left(27 a^{4} + 10 a^{3} + 4 a\right)\cdot 31^{2} + \left(a^{4} + 18 a^{3} + 20 a^{2} + 5 a + 5\right)\cdot 31^{3} + \left(26 a^{3} + 10 a^{2} + 15 a + 14\right)\cdot 31^{4} + \left(8 a^{3} + 25 a^{2} + 22 a + 23\right)\cdot 31^{5} + \left(16 a^{4} + 26 a^{3} + 28 a^{2} + 21 a + 17\right)\cdot 31^{6} + \left(17 a^{4} + 14 a^{3} + 26 a^{2} + 5 a + 27\right)\cdot 31^{7} + \left(29 a^{4} + 3 a^{3} + 26 a^{2} + 25 a\right)\cdot 31^{8} + \left(16 a^{4} + 21 a^{3} + 13 a^{2} + 22 a + 2\right)\cdot 31^{9} +O(31^{10})\) |
Generators of the action on the roots $r_1, \ldots, r_{ 15 }$
Cycle notation |
Character values on conjugacy classes
Size | Order | Action on $r_1, \ldots, r_{ 15 }$ | Character value |
$1$ | $1$ | $()$ | $2$ |
$5$ | $2$ | $(1,3)(4,6)(5,9)(7,10)(8,13)(12,15)$ | $0$ |
$1$ | $3$ | $(1,13,15)(2,11,14)(3,8,12)(4,10,5)(6,7,9)$ | $2 \zeta_{15}^{5}$ |
$1$ | $3$ | $(1,15,13)(2,14,11)(3,12,8)(4,5,10)(6,9,7)$ | $-2 \zeta_{15}^{5} - 2$ |
$2$ | $5$ | $(1,2,3,5,9)(4,6,13,11,8)(7,15,14,12,10)$ | $\zeta_{15}^{7} - \zeta_{15}^{3} + \zeta_{15}^{2} - 1$ |
$2$ | $5$ | $(1,3,9,2,5)(4,13,8,6,11)(7,14,10,15,12)$ | $-\zeta_{15}^{7} + \zeta_{15}^{3} - \zeta_{15}^{2}$ |
$5$ | $6$ | $(1,8,15,3,13,12)(2,11,14)(4,7,5,6,10,9)$ | $0$ |
$5$ | $6$ | $(1,12,13,3,15,8)(2,14,11)(4,9,10,6,5,7)$ | $0$ |
$2$ | $15$ | $(1,14,8,5,7,13,2,12,4,9,15,11,3,10,6)$ | $\zeta_{15}^{4} + \zeta_{15}$ |
$2$ | $15$ | $(1,8,7,2,4,15,3,6,14,5,13,12,9,11,10)$ | $\zeta_{15}^{7} - \zeta_{15}^{5} + \zeta_{15}^{4} - \zeta_{15}^{3} + \zeta_{15}^{2} + \zeta_{15} - 1$ |
$2$ | $15$ | $(1,12,6,2,10,13,3,7,11,5,15,8,9,14,4)$ | $\zeta_{15}^{5} - \zeta_{15}^{4} - \zeta_{15} + 1$ |
$2$ | $15$ | $(1,11,12,5,6,15,2,8,10,9,13,14,3,4,7)$ | $-\zeta_{15}^{7} - \zeta_{15}^{4} + \zeta_{15}^{3} - \zeta_{15}^{2} - \zeta_{15} + 1$ |
The blue line marks the conjugacy class containing complex conjugation.