Properties

Label 821.618
Modulus $821$
Conductor $821$
Order $41$
Real no
Primitive yes
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(821, base_ring=CyclotomicField(82))
 
M = H._module
 
chi = DirichletCharacter(H, M([42]))
 
pari: [g,chi] = znchar(Mod(618,821))
 

Basic properties

Modulus: \(821\)
Conductor: \(821\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(41\)
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 821.g

\(\chi_{821}(28,\cdot)\) \(\chi_{821}(35,\cdot)\) \(\chi_{821}(42,\cdot)\) \(\chi_{821}(63,\cdot)\) \(\chi_{821}(88,\cdot)\) \(\chi_{821}(106,\cdot)\) \(\chi_{821}(110,\cdot)\) \(\chi_{821}(122,\cdot)\) \(\chi_{821}(132,\cdot)\) \(\chi_{821}(159,\cdot)\) \(\chi_{821}(165,\cdot)\) \(\chi_{821}(166,\cdot)\) \(\chi_{821}(183,\cdot)\) \(\chi_{821}(198,\cdot)\) \(\chi_{821}(249,\cdot)\) \(\chi_{821}(284,\cdot)\) \(\chi_{821}(297,\cdot)\) \(\chi_{821}(347,\cdot)\) \(\chi_{821}(355,\cdot)\) \(\chi_{821}(362,\cdot)\) \(\chi_{821}(404,\cdot)\) \(\chi_{821}(412,\cdot)\) \(\chi_{821}(426,\cdot)\) \(\chi_{821}(434,\cdot)\) \(\chi_{821}(463,\cdot)\) \(\chi_{821}(505,\cdot)\) \(\chi_{821}(515,\cdot)\) \(\chi_{821}(543,\cdot)\) \(\chi_{821}(548,\cdot)\) \(\chi_{821}(563,\cdot)\) ...

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: $\Q(\zeta_{41})$
Fixed field: Number field defined by a degree 41 polynomial

Values on generators

\(2\) → \(e\left(\frac{21}{41}\right)\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(5\)\(6\)\(7\)\(8\)\(9\)\(10\)\(11\)
\( \chi_{ 821 }(618, a) \) \(1\)\(1\)\(e\left(\frac{21}{41}\right)\)\(e\left(\frac{3}{41}\right)\)\(e\left(\frac{1}{41}\right)\)\(e\left(\frac{2}{41}\right)\)\(e\left(\frac{24}{41}\right)\)\(e\left(\frac{24}{41}\right)\)\(e\left(\frac{22}{41}\right)\)\(e\left(\frac{6}{41}\right)\)\(e\left(\frac{23}{41}\right)\)\(e\left(\frac{35}{41}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 821 }(618,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 821 }(618,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 821 }(618,·),\chi_{ 821 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 821 }(618,·)) \;\) at \(\; a,b = \) e.g. 1,2