from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(2156, base_ring=CyclotomicField(42))
M = H._module
chi = DirichletCharacter(H, M([21,26,0]))
pari: [g,chi] = znchar(Mod(639,2156))
Basic properties
| Modulus: | \(2156\) | |
| Conductor: | \(196\) | sage: chi.conductor()
pari: znconreyconductor(g,chi)
|
| Order: | \(42\) | sage: chi.multiplicative_order()
pari: charorder(g,chi)
|
| Real: | no | |
| Primitive: | no, induced from \(\chi_{196}(51,\cdot)\) | sage: chi.is_primitive()
pari: #znconreyconductor(g,chi)==1
|
| Minimal: | yes | |
| Parity: | odd | sage: chi.is_odd()
pari: zncharisodd(g,chi)
|
Galois orbit 2156.bs
\(\chi_{2156}(23,\cdot)\) \(\chi_{2156}(331,\cdot)\) \(\chi_{2156}(375,\cdot)\) \(\chi_{2156}(639,\cdot)\) \(\chi_{2156}(683,\cdot)\) \(\chi_{2156}(947,\cdot)\) \(\chi_{2156}(991,\cdot)\) \(\chi_{2156}(1299,\cdot)\) \(\chi_{2156}(1563,\cdot)\) \(\chi_{2156}(1607,\cdot)\) \(\chi_{2156}(1871,\cdot)\) \(\chi_{2156}(1915,\cdot)\)
sage: chi.galois_orbit()
order = charorder(g,chi)
[ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
Related number fields
| Field of values: | \(\Q(\zeta_{21})\) |
| Fixed field: | 42.0.74252462132603256348231837398371002884673933378885582779211491265789772693504.1 |
Values on generators
\((1079,1277,981)\) → \((-1,e\left(\frac{13}{21}\right),1)\)
First values
| \(a\) | \(-1\) | \(1\) | \(3\) | \(5\) | \(9\) | \(13\) | \(15\) | \(17\) | \(19\) | \(23\) | \(25\) | \(27\) |
| \( \chi_{ 2156 }(639, a) \) | \(-1\) | \(1\) | \(e\left(\frac{5}{42}\right)\) | \(e\left(\frac{20}{21}\right)\) | \(e\left(\frac{5}{21}\right)\) | \(e\left(\frac{3}{7}\right)\) | \(e\left(\frac{1}{14}\right)\) | \(e\left(\frac{10}{21}\right)\) | \(e\left(\frac{1}{6}\right)\) | \(e\left(\frac{1}{42}\right)\) | \(e\left(\frac{19}{21}\right)\) | \(e\left(\frac{5}{14}\right)\) |
sage: chi.jacobi_sum(n)