from sage.modular.dirichlet import DirichletCharacter
H = DirichletGroup(2805, base_ring=CyclotomicField(20))
M = H._module
chi = DirichletCharacter(H, M([10,15,16,5]))
pari: [g,chi] = znchar(Mod(608,2805))
Basic properties
Modulus: | \(2805\) | |
Conductor: | \(2805\) | sage: chi.conductor()
pari: znconreyconductor(g,chi)
|
Order: | \(20\) | 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 2805.ea
\(\chi_{2805}(608,\cdot)\) \(\chi_{2805}(752,\cdot)\) \(\chi_{2805}(863,\cdot)\) \(\chi_{2805}(1373,\cdot)\) \(\chi_{2805}(2027,\cdot)\) \(\chi_{2805}(2138,\cdot)\) \(\chi_{2805}(2282,\cdot)\) \(\chi_{2805}(2792,\cdot)\)
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: | \(\Q(\zeta_{20})\) |
Fixed field: | Number field defined by a degree 20 polynomial |
Values on generators
\((1871,562,1531,496)\) → \((-1,-i,e\left(\frac{4}{5}\right),i)\)
First values
\(a\) | \(-1\) | \(1\) | \(2\) | \(4\) | \(7\) | \(8\) | \(13\) | \(14\) | \(16\) | \(19\) | \(23\) | \(26\) |
\( \chi_{ 2805 }(608, a) \) | \(1\) | \(1\) | \(e\left(\frac{11}{20}\right)\) | \(e\left(\frac{1}{10}\right)\) | \(e\left(\frac{1}{10}\right)\) | \(e\left(\frac{13}{20}\right)\) | \(e\left(\frac{1}{20}\right)\) | \(e\left(\frac{13}{20}\right)\) | \(e\left(\frac{1}{5}\right)\) | \(e\left(\frac{2}{5}\right)\) | \(-1\) | \(e\left(\frac{3}{5}\right)\) |
sage: chi.jacobi_sum(n)