Properties

Label 187.19
Modulus $187$
Conductor $187$
Order $40$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(187, base_ring=CyclotomicField(40))
 
M = H._module
 
chi = DirichletCharacter(H, M([12,35]))
 
pari: [g,chi] = znchar(Mod(19,187))
 

Basic properties

Modulus: \(187\)
Conductor: \(187\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(40\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 187.q

\(\chi_{187}(2,\cdot)\) \(\chi_{187}(8,\cdot)\) \(\chi_{187}(19,\cdot)\) \(\chi_{187}(83,\cdot)\) \(\chi_{187}(94,\cdot)\) \(\chi_{187}(117,\cdot)\) \(\chi_{187}(127,\cdot)\) \(\chi_{187}(128,\cdot)\) \(\chi_{187}(134,\cdot)\) \(\chi_{187}(138,\cdot)\) \(\chi_{187}(145,\cdot)\) \(\chi_{187}(151,\cdot)\) \(\chi_{187}(161,\cdot)\) \(\chi_{187}(162,\cdot)\) \(\chi_{187}(172,\cdot)\) \(\chi_{187}(178,\cdot)\)

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: \(\Q(\zeta_{40})\)
Fixed field: 40.0.359624204259227998212313764863527746816862563620018205460931204658277030572367073.1

Values on generators

\((35,122)\) → \((e\left(\frac{3}{10}\right),e\left(\frac{7}{8}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(5\)\(6\)\(7\)\(8\)\(9\)\(10\)\(12\)
\( \chi_{ 187 }(19, a) \) \(-1\)\(1\)\(e\left(\frac{11}{20}\right)\)\(e\left(\frac{11}{40}\right)\)\(e\left(\frac{1}{10}\right)\)\(e\left(\frac{23}{40}\right)\)\(e\left(\frac{33}{40}\right)\)\(e\left(\frac{29}{40}\right)\)\(e\left(\frac{13}{20}\right)\)\(e\left(\frac{11}{20}\right)\)\(e\left(\frac{1}{8}\right)\)\(e\left(\frac{3}{8}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 187 }(19,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 187 }(19,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 187 }(19,·),\chi_{ 187 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 187 }(19,·)) \;\) at \(\; a,b = \) e.g. 1,2