Properties

Label 3960.79
Modulus $3960$
Conductor $1980$
Order $30$
Real no
Primitive no
Minimal no
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(3960, base_ring=CyclotomicField(30))
 
M = H._module
 
chi = DirichletCharacter(H, M([15,0,20,15,3]))
 
pari: [g,chi] = znchar(Mod(79,3960))
 

Basic properties

Modulus: \(3960\)
Conductor: \(1980\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(30\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{1980}(79,\cdot)\)
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: no
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 3960.fx

\(\chi_{3960}(79,\cdot)\) \(\chi_{3960}(679,\cdot)\) \(\chi_{3960}(799,\cdot)\) \(\chi_{3960}(1399,\cdot)\) \(\chi_{3960}(2119,\cdot)\) \(\chi_{3960}(2239,\cdot)\) \(\chi_{3960}(3319,\cdot)\) \(\chi_{3960}(3559,\cdot)\)

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: \(\Q(\zeta_{15})\)
Fixed field: Number field defined by a degree 30 polynomial

Values on generators

\((991,1981,3521,2377,2521)\) → \((-1,1,e\left(\frac{2}{3}\right),-1,e\left(\frac{1}{10}\right))\)

First values

\(a\) \(-1\)\(1\)\(7\)\(13\)\(17\)\(19\)\(23\)\(29\)\(31\)\(37\)\(41\)\(43\)
\( \chi_{ 3960 }(79, a) \) \(1\)\(1\)\(e\left(\frac{11}{30}\right)\)\(e\left(\frac{14}{15}\right)\)\(e\left(\frac{2}{5}\right)\)\(e\left(\frac{4}{5}\right)\)\(e\left(\frac{1}{3}\right)\)\(e\left(\frac{11}{30}\right)\)\(e\left(\frac{13}{30}\right)\)\(e\left(\frac{7}{10}\right)\)\(e\left(\frac{19}{30}\right)\)\(e\left(\frac{1}{6}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 3960 }(79,a) \;\) at \(\;a = \) e.g. 2