Basic invariants
| Dimension: | $3$ |
| Group: | $\GL(3,2)$ |
| Conductor: | \(2007889\)\(\medspace = 13^{2} \cdot 109^{2} \) |
| Artin stem field: | Galois closure of 7.3.2007889.2 |
| Galois orbit size: | $2$ |
| Smallest permutation container: | $\PSL(2,7)$ |
| Parity: | even |
| Determinant: | 1.1.1t1.a.a |
| Projective image: | $\GL(3,2)$ |
| Projective stem field: | Galois closure of 7.3.2007889.2 |
Defining polynomial
| $f(x)$ | $=$ |
\( x^{7} - 2x^{6} - x^{5} + 4x^{4} - 3x^{2} - x + 1 \)
|
The roots of $f$ are computed in an extension of $\Q_{ 11 }$ to precision 5.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 11 }$:
\( x^{3} + 2x + 9 \)
Roots:
| $r_{ 1 }$ | $=$ |
\( 2 a + 2 + \left(6 a^{2} + 10 a + 8\right)\cdot 11 + \left(10 a^{2} + 4 a\right)\cdot 11^{2} + \left(2 a + 7\right)\cdot 11^{3} + \left(3 a^{2} + 9 a + 4\right)\cdot 11^{4} +O(11^{5})\)
|
| $r_{ 2 }$ | $=$ |
\( 8 a^{2} + 9 a + 1 + \left(3 a^{2} + 8\right)\cdot 11 + \left(5 a^{2} + 10 a + 9\right)\cdot 11^{2} + \left(3 a^{2} + 10 a\right)\cdot 11^{3} + \left(7 a^{2} + 3 a\right)\cdot 11^{4} +O(11^{5})\)
|
| $r_{ 3 }$ | $=$ |
\( 9 a^{2} + 7 a + 3 + \left(6 a + 1\right)\cdot 11 + \left(2 a^{2} + 5 a + 4\right)\cdot 11^{2} + \left(10 a^{2} + 2 a + 8\right)\cdot 11^{3} + \left(4 a^{2} + 8 a + 10\right)\cdot 11^{4} +O(11^{5})\)
|
| $r_{ 4 }$ | $=$ |
\( 4 a^{2} + 7 a + 3 + \left(a^{2} + 2 a + 1\right)\cdot 11 + \left(7 a^{2} + 3 a + 1\right)\cdot 11^{2} + \left(2 a^{2} + 6 a + 7\right)\cdot 11^{3} + \left(6 a^{2} + 4 a + 9\right)\cdot 11^{4} +O(11^{5})\)
|
| $r_{ 5 }$ | $=$ |
\( 2 a^{2} + 2 a + 1 + \left(4 a^{2} + 5 a + 2\right)\cdot 11 + \left(9 a^{2} + 10\right)\cdot 11^{2} + \left(10 a^{2} + 6 a + 1\right)\cdot 11^{3} + \left(2 a^{2} + 4 a + 8\right)\cdot 11^{4} +O(11^{5})\)
|
| $r_{ 6 }$ | $=$ |
\( 10 a^{2} + 6 a + \left(5 a^{2} + 7 a\right)\cdot 11 + \left(9 a^{2} + 8 a + 8\right)\cdot 11^{2} + \left(4 a^{2} + 4 a + 2\right)\cdot 11^{3} + \left(8 a^{2} + 2 a + 5\right)\cdot 11^{4} +O(11^{5})\)
|
| $r_{ 7 }$ | $=$ |
\( 3 + 11 + 10\cdot 11^{2} + 4\cdot 11^{3} + 5\cdot 11^{4} +O(11^{5})\)
|
Generators of the action on the roots $r_1, \ldots, r_{ 7 }$
| Cycle notation |
Character values on conjugacy classes
| Size | Order | Action on $r_1, \ldots, r_{ 7 }$ | Character value |
| $1$ | $1$ | $()$ | $3$ |
| $21$ | $2$ | $(1,2)(5,7)$ | $-1$ |
| $56$ | $3$ | $(1,3,6)(2,5,4)$ | $0$ |
| $42$ | $4$ | $(1,5,6,4)(3,7)$ | $1$ |
| $24$ | $7$ | $(1,7,3,5,6,4,2)$ | $-\zeta_{7}^{4} - \zeta_{7}^{2} - \zeta_{7} - 1$ |
| $24$ | $7$ | $(1,5,2,3,4,7,6)$ | $\zeta_{7}^{4} + \zeta_{7}^{2} + \zeta_{7}$ |
The blue line marks the conjugacy class containing complex conjugation.