Properties

Label 987.8
Modulus $987$
Conductor $141$
Order $46$
Real no
Primitive no
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(987, base_ring=CyclotomicField(46))
 
M = H._module
 
chi = DirichletCharacter(H, M([23,0,8]))
 
pari: [g,chi] = znchar(Mod(8,987))
 

Basic properties

Modulus: \(987\)
Conductor: \(141\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(46\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{141}(8,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 987.x

\(\chi_{987}(8,\cdot)\) \(\chi_{987}(50,\cdot)\) \(\chi_{987}(71,\cdot)\) \(\chi_{987}(155,\cdot)\) \(\chi_{987}(197,\cdot)\) \(\chi_{987}(239,\cdot)\) \(\chi_{987}(260,\cdot)\) \(\chi_{987}(365,\cdot)\) \(\chi_{987}(491,\cdot)\) \(\chi_{987}(512,\cdot)\) \(\chi_{987}(533,\cdot)\) \(\chi_{987}(554,\cdot)\) \(\chi_{987}(596,\cdot)\) \(\chi_{987}(617,\cdot)\) \(\chi_{987}(638,\cdot)\) \(\chi_{987}(722,\cdot)\) \(\chi_{987}(764,\cdot)\) \(\chi_{987}(806,\cdot)\) \(\chi_{987}(827,\cdot)\) \(\chi_{987}(848,\cdot)\) \(\chi_{987}(911,\cdot)\) \(\chi_{987}(974,\cdot)\)

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: \(\Q(\zeta_{23})\)
Fixed field: 46.0.3516370336176915030779886015601767871077707157889593350075735586626118367196692091787.1

Values on generators

\((659,283,757)\) → \((-1,1,e\left(\frac{4}{23}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(5\)\(8\)\(10\)\(11\)\(13\)\(16\)\(17\)\(19\)
\( \chi_{ 987 }(8, a) \) \(-1\)\(1\)\(e\left(\frac{29}{46}\right)\)\(e\left(\frac{6}{23}\right)\)\(e\left(\frac{31}{46}\right)\)\(e\left(\frac{41}{46}\right)\)\(e\left(\frac{7}{23}\right)\)\(e\left(\frac{33}{46}\right)\)\(e\left(\frac{21}{23}\right)\)\(e\left(\frac{12}{23}\right)\)\(e\left(\frac{13}{46}\right)\)\(e\left(\frac{19}{23}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 987 }(8,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 987 }(8,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 987 }(8,·),\chi_{ 987 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 987 }(8,·)) \;\) at \(\; a,b = \) e.g. 1,2