Properties

Label 987.26
Modulus $987$
Conductor $987$
Order $138$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(987, base_ring=CyclotomicField(138))
 
M = H._module
 
chi = DirichletCharacter(H, M([69,115,87]))
 
pari: [g,chi] = znchar(Mod(26,987))
 

Basic properties

Modulus: \(987\)
Conductor: \(987\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(138\)
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 987.ba

\(\chi_{987}(5,\cdot)\) \(\chi_{987}(26,\cdot)\) \(\chi_{987}(38,\cdot)\) \(\chi_{987}(80,\cdot)\) \(\chi_{987}(152,\cdot)\) \(\chi_{987}(164,\cdot)\) \(\chi_{987}(185,\cdot)\) \(\chi_{987}(227,\cdot)\) \(\chi_{987}(248,\cdot)\) \(\chi_{987}(257,\cdot)\) \(\chi_{987}(278,\cdot)\) \(\chi_{987}(311,\cdot)\) \(\chi_{987}(320,\cdot)\) \(\chi_{987}(362,\cdot)\) \(\chi_{987}(374,\cdot)\) \(\chi_{987}(395,\cdot)\) \(\chi_{987}(416,\cdot)\) \(\chi_{987}(446,\cdot)\) \(\chi_{987}(458,\cdot)\) \(\chi_{987}(467,\cdot)\) \(\chi_{987}(500,\cdot)\) \(\chi_{987}(509,\cdot)\) \(\chi_{987}(530,\cdot)\) \(\chi_{987}(584,\cdot)\) \(\chi_{987}(593,\cdot)\) \(\chi_{987}(605,\cdot)\) \(\chi_{987}(626,\cdot)\) \(\chi_{987}(656,\cdot)\) \(\chi_{987}(668,\cdot)\) \(\chi_{987}(677,\cdot)\) ...

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: $\Q(\zeta_{69})$
Fixed field: Number field defined by a degree 138 polynomial (not computed)

Values on generators

\((659,283,757)\) → \((-1,e\left(\frac{5}{6}\right),e\left(\frac{29}{46}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(5\)\(8\)\(10\)\(11\)\(13\)\(16\)\(17\)\(19\)
\( \chi_{ 987 }(26, a) \) \(-1\)\(1\)\(e\left(\frac{71}{138}\right)\)\(e\left(\frac{2}{69}\right)\)\(e\left(\frac{41}{138}\right)\)\(e\left(\frac{25}{46}\right)\)\(e\left(\frac{56}{69}\right)\)\(e\left(\frac{17}{69}\right)\)\(e\left(\frac{10}{23}\right)\)\(e\left(\frac{4}{69}\right)\)\(e\left(\frac{29}{69}\right)\)\(e\left(\frac{37}{69}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 987 }(26,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 987 }(26,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 987 }(26,·),\chi_{ 987 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 987 }(26,·)) \;\) at \(\; a,b = \) e.g. 1,2