Basic invariants
| Dimension: | $7$ |
| Group: | $C_2^3:(C_7: C_3)$ |
| Conductor: | \(1157018619904\)\(\medspace = 2^{12} \cdot 7^{10} \) |
| Frobenius-Schur indicator: | $1$ |
| Root number: | $1$ |
| Artin number field: | Galois closure of 8.0.1157018619904.2 |
| Galois orbit size: | $1$ |
| Smallest permutation container: | $C_2^3:(C_7: C_3)$ |
| Parity: | even |
| Projective image: | $F_8:C_3$ |
| Projective field: | Galois closure of 8.0.1157018619904.2 |
Galois action
Roots of defining polynomial
The roots of $f$ are computed in an extension of $\Q_{ 19 }$ to precision 10.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 19 }$:
\( x^{3} + 4x + 17 \)
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Roots:
| $r_{ 1 }$ | $=$ |
\( 14 a^{2} + 6 a + 17 + \left(8 a^{2} + 10 a + 2\right)\cdot 19 + \left(a^{2} + a + 4\right)\cdot 19^{2} + \left(5 a^{2} + 4 a\right)\cdot 19^{3} + \left(a^{2} + 9 a + 17\right)\cdot 19^{4} + \left(12 a^{2} + 5 a + 16\right)\cdot 19^{5} + \left(2 a^{2} + 3 a + 4\right)\cdot 19^{6} + \left(9 a^{2} + 3 a + 13\right)\cdot 19^{7} + \left(12 a^{2} + 2 a + 2\right)\cdot 19^{8} + \left(4 a^{2} + 11 a + 13\right)\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 2 }$ | $=$ |
\( 16 a^{2} + 13 a + 16 + \left(9 a^{2} + 8 a + 5\right)\cdot 19 + \left(5 a^{2} + 18 a + 2\right)\cdot 19^{2} + \left(9 a^{2} + 12 a + 5\right)\cdot 19^{3} + \left(13 a^{2} + 10 a + 5\right)\cdot 19^{4} + \left(18 a^{2} + 6 a + 9\right)\cdot 19^{5} + \left(7 a^{2} + 7 a + 6\right)\cdot 19^{6} + \left(5 a^{2} + 7 a + 3\right)\cdot 19^{7} + \left(4 a^{2} + 5 a + 6\right)\cdot 19^{8} + \left(7 a^{2} + 8 a + 7\right)\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 3 }$ | $=$ |
\( 7 a^{2} + 3 a + 13 + \left(4 a^{2} + 13 a + 3\right)\cdot 19 + \left(16 a^{2} + 7 a + 10\right)\cdot 19^{2} + \left(12 a^{2} + 15 a + 11\right)\cdot 19^{3} + \left(17 a^{2} + 8 a + 16\right)\cdot 19^{4} + \left(12 a^{2} + 2 a + 6\right)\cdot 19^{5} + \left(13 a^{2} + 12 a + 7\right)\cdot 19^{6} + \left(10 a^{2} + 12 a + 6\right)\cdot 19^{7} + \left(a^{2} + 4 a + 8\right)\cdot 19^{8} + \left(16 a^{2} + 11 a + 4\right)\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 4 }$ | $=$ |
\( 11 + 15\cdot 19 + 4\cdot 19^{2} + 16\cdot 19^{3} + 2\cdot 19^{4} + 19^{5} + 6\cdot 19^{6} + 7\cdot 19^{7} + 16\cdot 19^{8} + 16\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 5 }$ | $=$ |
\( 8 a^{2} + 1 + 6\cdot 19 + \left(12 a^{2} + 18 a + 13\right)\cdot 19^{2} + \left(4 a^{2} + a + 11\right)\cdot 19^{3} + \left(4 a^{2} + 18 a + 18\right)\cdot 19^{4} + \left(7 a^{2} + 6 a + 3\right)\cdot 19^{5} + \left(8 a^{2} + 8 a + 1\right)\cdot 19^{6} + \left(4 a^{2} + 8 a + 7\right)\cdot 19^{7} + \left(2 a^{2} + 11 a + 13\right)\cdot 19^{8} + \left(7 a^{2} + 18 a\right)\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 6 }$ | $=$ |
\( 8 a^{2} + 16 a + 3 + \left(9 a^{2} + 10 a + 17\right)\cdot 19 + \left(a^{2} + 17 a + 8\right)\cdot 19^{2} + \left(12 a^{2} + 12 a + 9\right)\cdot 19^{3} + \left(3 a^{2} + 17 a + 4\right)\cdot 19^{4} + \left(14 a^{2} + 5 a + 10\right)\cdot 19^{5} + \left(3 a^{2} + 12 a + 12\right)\cdot 19^{6} + \left(18 a^{2} + 5 a + 13\right)\cdot 19^{7} + \left(a^{2} + 5 a + 15\right)\cdot 19^{8} + \left(12 a^{2} + 3 a + 12\right)\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 7 }$ | $=$ |
\( 4 a^{2} + 5 + \left(5 a^{2} + 14 a + 12\right)\cdot 19 + \left(a^{2} + 12 a + 14\right)\cdot 19^{2} + \left(13 a^{2} + 9 a + 5\right)\cdot 19^{3} + \left(16 a^{2} + 11 a + 1\right)\cdot 19^{4} + \left(10 a^{2} + 10 a + 14\right)\cdot 19^{5} + \left(a^{2} + 13 a + 6\right)\cdot 19^{6} + \left(9 a^{2} + 8\right)\cdot 19^{7} + \left(15 a^{2} + 9 a + 7\right)\cdot 19^{8} + \left(9 a^{2} + 4 a\right)\cdot 19^{9} +O(19^{10})\)
|
| $r_{ 8 }$ | $=$ |
\( 12 + 12\cdot 19 + 17\cdot 19^{2} + 15\cdot 19^{3} + 9\cdot 19^{4} + 13\cdot 19^{5} + 11\cdot 19^{6} + 16\cdot 19^{7} + 5\cdot 19^{8} + 19^{9} +O(19^{10})\)
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Generators of the action on the roots $r_1, \ldots, r_{ 8 }$
| Cycle notation |
Character values on conjugacy classes
| Size | Order | Action on $r_1, \ldots, r_{ 8 }$ | Character values |
| $c1$ | |||
| $1$ | $1$ | $()$ | $7$ |
| $7$ | $2$ | $(1,6)(2,3)(4,7)(5,8)$ | $-1$ |
| $28$ | $3$ | $(1,8,3)(2,6,5)$ | $1$ |
| $28$ | $3$ | $(1,3,8)(2,5,6)$ | $1$ |
| $28$ | $6$ | $(1,2,8,6,3,5)(4,7)$ | $-1$ |
| $28$ | $6$ | $(1,5,3,6,8,2)(4,7)$ | $-1$ |
| $24$ | $7$ | $(1,3,7,6,4,5,8)$ | $0$ |
| $24$ | $7$ | $(1,6,8,7,5,3,4)$ | $0$ |