Basic invariants
Dimension: | $7$ |
Group: | $\GL(3,2)$ |
Conductor: | \(1068249673759921\)\(\medspace = 5717^{4} \) |
Frobenius-Schur indicator: | $1$ |
Root number: | $1$ |
Artin stem field: | Galois closure of 7.3.32684089.1 |
Galois orbit size: | $1$ |
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 7.3.32684089.1 |
Defining polynomial
$f(x)$ | $=$ | \( x^{7} - x^{6} - 2x^{5} + 4x^{4} - x^{3} - 2x^{2} - x + 1 \) . |
The roots of $f$ are computed in an extension of $\Q_{ 11 }$ to precision 6.
Minimal polynomial of a generator $a$ of $K$ over $\mathbb{Q}_{ 11 }$: \( x^{3} + 2x + 9 \)
Roots:
$r_{ 1 }$ | $=$ | \( 6 a^{2} + a + \left(5 a^{2} + 7 a + 10\right)\cdot 11 + \left(5 a^{2} + a\right)\cdot 11^{2} + \left(6 a^{2} + a + 10\right)\cdot 11^{3} + \left(a^{2} + 10 a + 5\right)\cdot 11^{4} + \left(9 a^{2} + a + 7\right)\cdot 11^{5} +O(11^{6})\) |
$r_{ 2 }$ | $=$ | \( 4 + 6\cdot 11 + 8\cdot 11^{2} + 7\cdot 11^{3} + 9\cdot 11^{4} + 10\cdot 11^{5} +O(11^{6})\) |
$r_{ 3 }$ | $=$ | \( 4 a^{2} + 7 a + 5 + \left(3 a^{2} + 2 a + 3\right)\cdot 11 + \left(7 a^{2} + a + 2\right)\cdot 11^{2} + \left(a^{2} + a + 9\right)\cdot 11^{3} + \left(3 a^{2} + 8 a\right)\cdot 11^{4} + \left(6 a^{2} + 9 a + 2\right)\cdot 11^{5} +O(11^{6})\) |
$r_{ 4 }$ | $=$ | \( 5 a + 3 + \left(4 a^{2} + 5 a + 4\right)\cdot 11 + \left(3 a^{2} + 10 a + 5\right)\cdot 11^{2} + \left(4 a^{2} + 2 a + 3\right)\cdot 11^{3} + \left(9 a^{2} + 3 a + 5\right)\cdot 11^{4} + \left(4 a^{2} + 5\right)\cdot 11^{5} +O(11^{6})\) |
$r_{ 5 }$ | $=$ | \( 10 a^{2} + 6 a + 2 + \left(a^{2} + a + 5\right)\cdot 11 + \left(5 a^{2} + 7 a + 10\right)\cdot 11^{2} + \left(3 a^{2} + a + 7\right)\cdot 11^{3} + \left(2 a^{2} + 4 a + 10\right)\cdot 11^{4} + \left(2 a^{2} + 3 a + 3\right)\cdot 11^{5} +O(11^{6})\) |
$r_{ 6 }$ | $=$ | \( 8 a^{2} + 9 a + 3 + \left(5 a^{2} + 6 a + 10\right)\cdot 11 + \left(9 a^{2} + 2 a + 8\right)\cdot 11^{2} + \left(5 a^{2} + 8 a + 3\right)\cdot 11^{3} + \left(5 a^{2} + 9 a\right)\cdot 11^{4} + \left(2 a^{2} + 8 a + 8\right)\cdot 11^{5} +O(11^{6})\) |
$r_{ 7 }$ | $=$ | \( 5 a^{2} + 5 a + 6 + \left(a^{2} + 9 a + 4\right)\cdot 11 + \left(2 a^{2} + 9 a + 7\right)\cdot 11^{2} + \left(6 a + 1\right)\cdot 11^{3} + 8 a\cdot 11^{4} + \left(8 a^{2} + 8 a + 6\right)\cdot 11^{5} +O(11^{6})\) |
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 |
$1$ | $1$ | $()$ | $7$ |
$21$ | $2$ | $(1,4)(2,7)$ | $-1$ |
$56$ | $3$ | $(1,2,6)(3,5,4)$ | $1$ |
$42$ | $4$ | $(2,5,6,4)(3,7)$ | $-1$ |
$24$ | $7$ | $(1,2,3,7,5,6,4)$ | $0$ |
$24$ | $7$ | $(1,7,4,3,6,2,5)$ | $0$ |
The blue line marks the conjugacy class containing complex conjugation.