sage: from sage.modular.dirichlet import DirichletCharacter
sage: H = DirichletGroup(91, base_ring=CyclotomicField(4))
sage: M = H._module
sage: chi = DirichletCharacter(H, M([2,1]))
pari: [g,chi] = znchar(Mod(34,91))
Basic properties
| Modulus: | \(91\) | |
| Conductor: | \(91\) | sage: chi.conductor()
pari: znconreyconductor(g,chi)
|
| Order: | \(4\) | sage: chi.multiplicative_order()
pari: charorder(g,chi)
|
| Real: | no | |
| Primitive: | yes | sage: chi.is_primitive()
pari: #znconreyconductor(g,chi)==1
|
| Minimal: | yes | |
| Parity: | even | sage: chi.is_odd()
pari: zncharisodd(g,chi)
|
Galois orbit 91.i
\(\chi_{91}(34,\cdot)\) \(\chi_{91}(83,\cdot)\)
sage: chi.galois_orbit()
pari: order = charorder(g,chi)
pari: [ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
Related number fields
| Field of values: | \(\Q(\sqrt{-1}) \) |
| Fixed field: | 4.4.107653.1 |
Values on generators
\((66,15)\) → \((-1,i)\)
Values
| \(-1\) | \(1\) | \(2\) | \(3\) | \(4\) | \(5\) | \(6\) | \(8\) | \(9\) | \(10\) | \(11\) | \(12\) |
| \(1\) | \(1\) | \(i\) | \(-1\) | \(-1\) | \(-i\) | \(-i\) | \(-i\) | \(1\) | \(1\) | \(-i\) | \(1\) |
Gauss sum
sage: chi.gauss_sum(a)
pari: znchargauss(g,chi,a)
\(\displaystyle \tau_{2}(\chi_{91}(34,\cdot)) = \sum_{r\in \Z/91\Z} \chi_{91}(34,r) e\left(\frac{2r}{91}\right) = -2.7643645938+-9.1300760343i \)
Jacobi sum
sage: chi.jacobi_sum(n)
\( \displaystyle J(\chi_{91}(34,\cdot),\chi_{91}(1,\cdot)) = \sum_{r\in \Z/91\Z} \chi_{91}(34,r) \chi_{91}(1,1-r) = 1 \)
Kloosterman sum
sage: chi.kloosterman_sum(a,b)
\( \displaystyle K(1,2,\chi_{91}(34,·))
= \sum_{r \in \Z/91\Z}
\chi_{91}(34,r) e\left(\frac{1 r + 2 r^{-1}}{91}\right)
= 14.298992881+14.298992881i \)