Basic invariants
Dimension: | $2$ |
Group: | $D_{4}$ |
Conductor: | \(2280\)\(\medspace = 2^{3} \cdot 3 \cdot 5 \cdot 19 \) |
Frobenius-Schur indicator: | $1$ |
Root number: | $1$ |
Artin stem field: | Galois closure of 4.2.54720.2 |
Galois orbit size: | $1$ |
Smallest permutation container: | $D_{4}$ |
Parity: | odd |
Determinant: | 1.2280.2t1.b.a |
Projective image: | $C_2^2$ |
Projective field: | Galois closure of \(\Q(\sqrt{6}, \sqrt{-95})\) |
Defining polynomial
$f(x)$ | $=$ | \( x^{4} - 2x^{3} - 7x^{2} - 10x - 5 \) . |
The roots of $f$ are computed in $\Q_{ 53 }$ to precision 5.
Roots:
$r_{ 1 }$ | $=$ | \( 2 + 30\cdot 53 + 24\cdot 53^{2} + 12\cdot 53^{3} + 4\cdot 53^{4} +O(53^{5})\) |
$r_{ 2 }$ | $=$ | \( 17 + 14\cdot 53 + 48\cdot 53^{2} + 53^{3} + 8\cdot 53^{4} +O(53^{5})\) |
$r_{ 3 }$ | $=$ | \( 43 + 8\cdot 53 + 11\cdot 53^{2} + 32\cdot 53^{3} + 4\cdot 53^{4} +O(53^{5})\) |
$r_{ 4 }$ | $=$ | \( 46 + 52\cdot 53 + 21\cdot 53^{2} + 6\cdot 53^{3} + 36\cdot 53^{4} +O(53^{5})\) |
Generators of the action on the roots $r_1, \ldots, r_{ 4 }$
Cycle notation |
Character values on conjugacy classes
Size | Order | Action on $r_1, \ldots, r_{ 4 }$ | Character value |
$1$ | $1$ | $()$ | $2$ |
$1$ | $2$ | $(1,2)(3,4)$ | $-2$ |
$2$ | $2$ | $(1,3)(2,4)$ | $0$ |
$2$ | $2$ | $(1,2)$ | $0$ |
$2$ | $4$ | $(1,4,2,3)$ | $0$ |
The blue line marks the conjugacy class containing complex conjugation.