Basic invariants
Dimension: | $2$ |
Group: | $D_{15}$ |
Conductor: | \(2303\)\(\medspace = 7^{2} \cdot 47 \) |
Frobenius-Schur indicator: | $1$ |
Root number: | $1$ |
Artin stem field: | Galois closure of 15.1.143108492101942920287.1 |
Galois orbit size: | $4$ |
Smallest permutation container: | $D_{15}$ |
Parity: | odd |
Determinant: | 1.47.2t1.a.a |
Projective image: | $D_{15}$ |
Projective stem field: | Galois closure of 15.1.143108492101942920287.1 |
Defining polynomial
$f(x)$ | $=$ | \( x^{15} - x^{14} + 3 x^{13} - 21 x^{12} + 23 x^{11} + 8 x^{10} + 39 x^{9} - 113 x^{8} - 64 x^{7} + \cdots + 13 \) . |
The roots of $f$ are computed in an extension of $\Q_{ 79 }$ to precision 5.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 79 }$: \( x^{5} + 5x + 76 \)
Roots:
$r_{ 1 }$ | $=$ | \( 14 a^{3} + 32 a^{2} + 60 a + 37 + \left(42 a^{4} + 70 a^{3} + 54 a^{2} + 32 a + 55\right)\cdot 79 + \left(9 a^{4} + 29 a^{3} + 64 a^{2} + 45 a + 62\right)\cdot 79^{2} + \left(46 a^{4} + 45 a^{3} + 50 a^{2} + 20 a + 39\right)\cdot 79^{3} + \left(43 a^{4} + 63 a^{3} + 70 a^{2} + 58 a + 19\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 2 }$ | $=$ | \( 5 a^{4} + 61 a^{3} + 65 a^{2} + 13 a + 57 + \left(43 a^{4} + 34 a^{3} + 15 a^{2} + 2 a + 59\right)\cdot 79 + \left(15 a^{4} + 5 a^{3} + 40 a^{2} + 36 a + 7\right)\cdot 79^{2} + \left(55 a^{4} + 18 a^{3} + 15 a^{2} + 38 a + 76\right)\cdot 79^{3} + \left(74 a^{4} + 19 a^{3} + 68 a^{2} + 37 a + 64\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 3 }$ | $=$ | \( 11 a^{4} + 40 a^{3} + 42 a^{2} + 43 a + 11 + \left(25 a^{4} + 51 a^{3} + 77 a^{2} + 74 a + 25\right)\cdot 79 + \left(69 a^{4} + 46 a^{3} + 26 a^{2} + 21 a + 22\right)\cdot 79^{2} + \left(42 a^{4} + 4 a^{3} + 78 a^{2} + 44 a + 25\right)\cdot 79^{3} + \left(68 a^{4} + 76 a^{3} + 36 a^{2} + 48 a + 70\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 4 }$ | $=$ | \( 16 a^{4} + 18 a^{3} + 5 a^{2} + 55 a + 22 + \left(55 a^{4} + 50 a^{3} + 42 a^{2} + 20 a + 29\right)\cdot 79 + \left(51 a^{4} + 38 a^{3} + 71 a^{2} + 40 a + 73\right)\cdot 79^{2} + \left(a^{4} + 44 a^{3} + 5 a^{2} + 27 a + 19\right)\cdot 79^{3} + \left(19 a^{4} + 51 a^{3} + 71 a^{2} + 60 a\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 5 }$ | $=$ | \( 18 a^{4} + 9 a^{3} + 70 a^{2} + 39 + \left(69 a^{4} + 73 a^{3} + 33 a^{2} + 41 a + 43\right)\cdot 79 + \left(7 a^{4} + 55 a^{3} + 16 a^{2} + 8 a + 13\right)\cdot 79^{2} + \left(31 a^{4} + 64 a^{3} + 50 a^{2} + 22 a + 57\right)\cdot 79^{3} + \left(78 a^{4} + 34 a^{3} + 10 a^{2} + 34 a + 30\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 6 }$ | $=$ | \( 24 a^{4} + 23 a^{3} + 30 a^{2} + 34 a + 29 + \left(26 a^{4} + 42 a^{3} + 76 a^{2} + 66 a + 40\right)\cdot 79 + \left(39 a^{4} + 66 a^{3} + 31 a^{2} + 5 a + 8\right)\cdot 79^{2} + \left(76 a^{4} + 41 a^{3} + 54 a^{2} + 40 a + 28\right)\cdot 79^{3} + \left(39 a^{4} + 49 a^{3} + 23 a^{2} + 65 a + 60\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 7 }$ | $=$ | \( 24 a^{4} + 35 a^{3} + 44 a^{2} + 18 a + 54 + \left(3 a^{4} + 34 a^{3} + 71 a^{2} + 32 a + 58\right)\cdot 79 + \left(77 a^{4} + 59 a^{3} + 5 a^{2} + 9 a + 16\right)\cdot 79^{2} + \left(5 a^{4} + 13 a^{3} + 67 a^{2} + 45 a + 37\right)\cdot 79^{3} + \left(44 a^{4} + 11 a^{3} + 60 a^{2} + 52 a + 21\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 8 }$ | $=$ | \( 29 a^{4} + 11 a^{3} + 76 a^{2} + 6 a + 4 + \left(15 a^{4} + 54 a^{3} + 38 a^{2} + 53 a + 65\right)\cdot 79 + \left(26 a^{4} + 57 a^{3} + 27 a^{2} + 75 a + 7\right)\cdot 79^{2} + \left(51 a^{4} + 33 a^{3} + 9 a^{2} + 73 a + 59\right)\cdot 79^{3} + \left(8 a^{4} + 26 a^{3} + 41 a + 67\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 9 }$ | $=$ | \( 30 a^{4} + 36 a^{3} + a^{2} + 4 a + 53 + \left(35 a^{4} + 47 a^{3} + 3 a^{2} + 76\right)\cdot 79 + \left(68 a^{4} + 33 a^{3} + 27 a^{2} + 4 a + 45\right)\cdot 79^{2} + \left(77 a^{4} + 15 a^{3} + a^{2} + 56 a + 33\right)\cdot 79^{3} + \left(57 a^{4} + 32 a^{3} + 8 a^{2} + 37 a + 53\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 10 }$ | $=$ | \( 34 a^{4} + 30 a^{3} + 12 a^{2} + 12 a + 15 + \left(14 a^{4} + 47 a^{3} + 53 a^{2} + 70 a + 24\right)\cdot 79 + \left(4 a^{4} + 24 a^{3} + 54 a^{2} + 26 a + 41\right)\cdot 79^{2} + \left(49 a^{4} + 36 a^{3} + 18 a^{2} + 26 a + 51\right)\cdot 79^{3} + \left(55 a^{4} + 12 a^{3} + 45 a^{2} + 28 a + 67\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 11 }$ | $=$ | \( 38 a^{4} + 17 a^{3} + 62 a^{2} + 22 a + 40 + \left(56 a^{4} + 76 a^{3} + 14 a^{2} + a + 71\right)\cdot 79 + \left(78 a^{4} + a^{3} + 28 a^{2} + 69 a + 59\right)\cdot 79^{2} + \left(72 a^{4} + 74 a^{2} + 48 a + 66\right)\cdot 79^{3} + \left(25 a^{4} + 12 a^{3} + 28 a^{2} + 68 a + 57\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 12 }$ | $=$ | \( 39 a^{4} + 67 a^{3} + 73 a^{2} + 12 a + 10 + \left(21 a^{4} + 31 a^{3} + 19 a^{2} + 76 a + 21\right)\cdot 79 + \left(55 a^{4} + 70 a^{3} + 37 a^{2} + 76 a + 72\right)\cdot 79^{2} + \left(40 a^{4} + 69 a^{3} + 42 a^{2} + 36 a + 42\right)\cdot 79^{3} + \left(64 a^{4} + 42 a^{3} + 69 a^{2} + 24 a\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 13 }$ | $=$ | \( 62 a^{4} + 2 a^{3} + 66 a^{2} + 8 a + 57 + \left(70 a^{4} + 61 a^{3} + 71 a^{2} + 67 a + 49\right)\cdot 79 + \left(54 a^{4} + 74 a^{3} + 58 a^{2} + 61 a + 43\right)\cdot 79^{2} + \left(38 a^{4} + 54 a^{3} + 24 a^{2} + 47 a + 8\right)\cdot 79^{3} + \left(55 a^{4} + 8 a^{3} + 2 a^{2} + 43 a + 18\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 14 }$ | $=$ | \( 71 a^{4} + 7 a^{3} + 31 a^{2} + 23 a + 59 + \left(77 a^{4} + 3 a^{3} + 33 a^{2} + 68 a + 9\right)\cdot 79 + \left(61 a^{4} + 6 a^{3} + 46 a^{2} + 2 a + 20\right)\cdot 79^{2} + \left(66 a^{4} + 51 a^{3} + 49 a^{2} + 56 a + 68\right)\cdot 79^{3} + \left(a^{4} + 43 a^{3} + 7 a^{2} + 13 a + 65\right)\cdot 79^{4} +O(79^{5})\) |
$r_{ 15 }$ | $=$ | \( 73 a^{4} + 25 a^{3} + 23 a^{2} + 6 a + 67 + \left(75 a^{4} + 33 a^{3} + 25 a^{2} + 26 a + 1\right)\cdot 79 + \left(11 a^{4} + 60 a^{3} + 15 a^{2} + 68 a + 57\right)\cdot 79^{2} + \left(54 a^{4} + 58 a^{3} + 10 a^{2} + 47 a + 17\right)\cdot 79^{3} + \left(72 a^{4} + 68 a^{3} + 49 a^{2} + 16 a + 33\right)\cdot 79^{4} +O(79^{5})\) |
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 |
$1$ | $1$ | $()$ | $2$ |
$15$ | $2$ | $(1,7)(2,10)(3,6)(5,15)(8,9)(11,12)(13,14)$ | $0$ |
$2$ | $3$ | $(1,11,6)(2,5,9)(3,12,7)(4,13,14)(8,15,10)$ | $-1$ |
$2$ | $5$ | $(1,10,2,7,4)(3,13,11,8,5)(6,15,9,12,14)$ | $-\zeta_{15}^{7} + \zeta_{15}^{3} - \zeta_{15}^{2}$ |
$2$ | $5$ | $(1,2,4,10,7)(3,11,5,13,8)(6,9,14,15,12)$ | $\zeta_{15}^{7} - \zeta_{15}^{3} + \zeta_{15}^{2} - 1$ |
$2$ | $15$ | $(1,9,13,10,12,11,2,14,8,7,6,5,4,15,3)$ | $-\zeta_{15}^{7} + \zeta_{15}^{6} - \zeta_{15}^{4} + \zeta_{15}^{3} - \zeta_{15}^{2} + \zeta_{15} + 1$ |
$2$ | $15$ | $(1,13,12,2,8,6,4,3,9,10,11,14,7,5,15)$ | $-\zeta_{15}^{7} + \zeta_{15}^{5} - \zeta_{15}^{4} + \zeta_{15}^{2} - \zeta_{15} + 1$ |
$2$ | $15$ | $(1,12,8,4,9,11,7,15,13,2,6,3,10,14,5)$ | $-\zeta_{15}^{6} + \zeta_{15}^{4} - \zeta_{15}$ |
$2$ | $15$ | $(1,14,3,2,15,11,4,12,5,10,6,13,7,9,8)$ | $2 \zeta_{15}^{7} - \zeta_{15}^{5} + \zeta_{15}^{4} - \zeta_{15}^{3} + \zeta_{15} - 1$ |
The blue line marks the conjugacy class containing complex conjugation.